I have noticed this long before this migration. There were a lot of users who would say things like, “stop trying to do mental gymnastics, just admit you want free stuff.” Because they think that way they assume everyone else thinks that way. They couldn’t possibly fathom that other people genuinely believe in the free exchange of media and information.
It depends on what you want. If you plan on keeping two different libraries in Plex I would also keep two Radarr instances, but if you are going for a combined library you could stick to one and just use a different quality profile for the movies you want to be in 4K.
If they have a 4K HDR capable TV they can playback HEVC. Does anyone even make x264 2160p releases? And container doesn’t matter either, Plex will remux it for you if necessary.
I use mine exclusively for torrents, so I don’t really care what is happening on the other end as long as they are masking my IP address. If you were using it for general browsing I could see that mattering more. But it’s really hard to beat the speeds + port forwarding for $2.22/mo ($80 for 3 years). That’s less than half the price of any comparable alternatives.