There’s people who want to follow other people because you can follow specific associations, independent journalists, etc. If you are like that Mastodon will help with that but if you prefer broader topics no matter the source you have Lemmy. This are two distinct social media which belong to two distinct groups as other mentioned like microblogging and a more standard forum.
I prefer Lemmy because I like to follow topics and I get more involved in the discussions but sometimes I want to check on someone and the best way is to go to a Mastodon like platform.
I mean you don’t need to use each social media every day, some will fit more your personality and you will use that more but that doesn’t mean you can’t open the other one from time to time.
Why are you specifically collecting negative reviews?