

Just don’t buy OLED and it won’t darken, if you buy OLED get ready to replace the extensive TV every 5 years no matter what brand you buy.
As for removing bloatware I have no idea since my TV is from around 2010 and I only use it connected to the computer, but you can always just get a raspberry pi and install kodi on it and use the TV as a normal dumb TV. It’s also good for your privacy.
I like simplex a lot on android, it supports e2ee calls which afaik xmpp doesn’t.
However simplex is still buggy, and sometimes messages don’t get through until the other party restarts the app. And the desktop app seems to be even buggier and has no native Wayland support.
I’ve used xmpp + otr for many years, it seems to be the most stable solution if calls aren’t a concern.
There are many clients to choose from, many of which are modern enough to support Wayland and are written in save languages (in the Whonix wiki there’s a nice xmpp client comparison you may be interested in)
Nowadays omemo seems to be the replacement for OTR, it’s a shame it doesn’t support Socialist Milionares Protocol like OTR did.