Because it’s absolutely not the same experience?

It looks pretty much like the app, I get recommendations like in the app, can watch my subscriptions like in the app, can see comments, video or fullscreen mode. Don’t know about you but for me this just feels like the app.

They break all the time but they always fix them. LibreTube has been broken for the past few days but they’ll fix it soon enough

That just sounds awful and would be a reason for me to stay far away from these apps