I have always found following peertube channels from mastodon to be a rough and cumbersome experience, especially since the mastodon clients do not display videos, they need an external browser.
I found that Newpipe can show peertube videos and supports channel membership, with optional notification for new publications. It also shows likes and comments. A very smooth experience.
I guess my initial problem would be solved with peertube redirect, allowing me to open peertube videos from mastodon in Newpipe, but for now I don’t feel I need this further step
I thought opening a peertube account as you suggest, but I find it is a bit of a waste to have yet another personal fediverse account, to do something I can theoretically do with a mastodon one,: follow peertube channels, like and comment videos.
I see 2 solutions thst would be right fit
No big deal: with Newpipe subscription and following accounts from mastodon, I can already do what I want without a big fuss 🙂