Then why are you using Jellyfin for?

Unless you host the videos with them an use their Stream solution yes.

It’s not completely gone, it’s just that now they offer you a way to do it, here’s some doc about it:

Finally, we made it clear that customers can serve video and other large files using the CDN so long as that content is hosted by a Cloudflare service like Stream, Images, or R2

Source: https://blog.cloudflare.com/updated-tos/

some users attempt to misconfigure our service to stream video in violation of our Terms of Service

Source: https://developers.cloudflare.com/fundamentals/reference/policies-compliances/delivering-videos-with-cloudflare/

In short, streaming videos hosted on your server is still against TOS, but they now offer a thing called Stream where you can host videos to be streamed without violating it.

Plex doesn’t even work properly unless you set it up with network mode host, otherwise it always considers your service to be remote because they’re not on the same network as anything you try to watch it from. Jellyfin requires lots less access, and you’re so worried about it you can add a Tailscale mod to the container and isolate it completely so it’s only accessible via Tailscale similarly to what you think Plex is doing (which doesn’t harden security as much as you think)

You’re replying to a message that literally says that, so it makes you sound like you think Tailscale is somewhat integrated into Jellyfin, because the message originally said exactly that you needed a third party app to solve this issue in Jellyfin

How do I install it on my mom’s Chromecast or my sister’s LG TV?

You completely ignored his question, Tailscale is not a valid solution for your mom’s Roku

How would you have worded it differently? Since the email needs to be sent because the person is losing a feature (they might not use it because they only stream from you, but they might stream from someone else, so they should be made aware of it)

Erm… AFAIK Plex doesn’t work offline, so you are open to the internet. And BTW what Plex does is very similar to what Jellyfin+Tailscale would do

Your smart tv might not have VLC in it. That’s like saying “I don’t NEED financing, I can pay for my house all at once”, like, good for you, but you’re in a very privileged spot, and VLC is a beast so it’s really not fair to compare it with an embebed video player on a smart tv or something. You can disable transcoding btw, it’s enabled by default so that it’s more compatible, which makes absolute sense.

Unfortunately most smart TVs lack a Tailscale app, so it’s not always possible.

It’s against Cloudflare TOS to stream video.

It is against Cloudflare TOS to stream video through them.

It’s not. Imagine Immich required library X to be at Y version, but another service on the server requires it to be at Z version. That will be a PitA to maintain, not to mention that getting a service to run at all can be difficult due to a multitude of reasons in which your system is different from the one where it was developed so it might just not work because it makes certain assumptions about where certain stuff will be or what APIs are available.

Docker eliminates all of those issues because it’s a reproducible environment, so if it runs on one system it runs on another. There’s a lot of value in that, and I’m not sure which resource you think is being wasted, but docker is almost seamless without not much overhead, where you won’t feel it even on a raspberry pi zero.

There are two ends here, as a user and as a developer. As a user Docker images just work, so you solve almost every problem you’re having which would be your users having them and giving up on using your software.

Then as a developer docker can get complicated, because you need to build a “system” from scratch to run your program. If you’re using an unstable 3d party package or missing packages it means that those problems would be happening in the deploy servers instead of your local machines, and each server would have its own set of problems due to which packages they didn’t have or had the wrong version, and in fixing that for your service you might be breaking other service already running there.

I tried Tandoor and Mealie. Currently I use Mealie because Tandoor crapped it’s pants on me and I lost everything I had there, Mealie is simpler and allows export/import to JSON or similar so I can keep a backup that can be converted into any other format I want to.

That being said I don’t use the list feature, and we use Bring at home, so KitchenOwl mentioned here also seems like a good idea for lists and I might check it out.