When I was purely a reader, I used to only like if I like the content because I thought it was more genuine.
But now I just like everything I actually read. Because hey if I’m still spending time to read it then I must enjoy it to some extent. And if I enjoy it then it deserves a like. Liking isn’t that difficult to begin with, takes like a second.
Other times when I’m binging a series though, I would go bulk heart every episode after I finish binging. Webtoons doesn’t notify so I do it without worry, but tapas notify and I’m not sure how people feel about getting 50 notifications.
Personally I’d be happy if someone took the time to go back and heart everything, showing that they actually really like the story, so I just do it anyways, hoping that would be the case for other creators.