How to remove "ABC is now friends with XYZ" on feed

There is no way other than source code edit or find a way to make a plugin. The old way caused database issues on large active sites. It was a plugin though and is in the old forum v3 area. If you find it and do that one, it could cause issues on your site. You could get a third party dev to make an app using a hook if the hook is still there for it.

This should be a core feature to turn this off.  Looks bad to have this in the feed.

Is this an option now in the Friend's module?  I see a blurb that is fairly ambiguous.

Allow posting on Main Feed
Allow posting to Main Feed when someone is a friend.

** This seems to stop the "xyz is now friend with abc" in the main feed.

The text reads as it should not post in the feed.

I just used this...as it works for third-party add-ons as well as you look under the manage tab and look what the last 50 feed post and their variable to exclude.

https://store.phpfox.com/apps/feed-bypass