I notice that when you click "Feed", some people have comments listed, others don't.
How can I show/hide comments made on videos, from my profile, when people click feed?
The option to choose what you want to show in the feeds are in Channel Settings -> Tab -> Feed --> Select what you want to be displayed in the feeds and then Save the settings.
I tried this on my YouTube channel but it didn't worked, but it's the only place to change the settings of YouTube channel, not sure why it isn't working.
Today using the classic youtube video manager, I see for each of the videos i have, the advanced options for each video can decide to allow no comments, any comment, approved comments and all comments except those that are considered inappropriate. I am a new user, but maybe there is also a per channel global setting or per playlist global setting that over rides the per video also.