It may not have the playerbase it used to have when it first boomed and changed the battle royale popularity, but the work the devs put in is too good not to look at, even though the game may not be in the best shape or the most fun one right now.
Fortnite is no longer the same as before, it is already boring, always based on the same theme and does not bring anything new, only cosmetics to get more money.
It's still extremely popular and I don't see it going away any time soon. I don't get the hate towards Fortnite. It's not my cup of tea but other people can enjoy it, and that's fine. I'm not offended by other people have different tastes than me.