In addition to what the others said, there was a „campaign“ a while ago that you should boost and not favorite on Mastodon.

Since there’s no algorithm that promotes liked posts in the timeline, liking something doesn’t do a whole lot.

That’s how it is most of the time for me. I unsubbed from LTT because their clickbaity videos made it hard for me to see what I’m interested in. With this extension I might actually start watching their stuff again.