A lot of them aren’t actually that active I found.

How is creating more new ones going to solve that problem?

I found myself posting the same news to a few of them simultaneously which was also using up a lot of time

I ask again, how is this solving that problem?

In my case, many were too specific

There are at least 3 general Linux communities.

There’s no real benefit to less communities I feel either

I just explained the benefits in the comment you replied to.

We could argue that pretty much every community on Lemmy has duplicates. So why bother making any?

Sometimes there are good reasons. Often times there aren’t. The explanation that some communities are too specific doesn’t really check out, because several are not. What else ya got?