what do you mean? i use it a lot and it works great, photos, videos, phone calls, optional temporary location sharing with friends, and encryption.
what features do you want it to have that it’s lacking?
I’m guessing they probably want stickers or something
Edit: apparently this is available on signal so I have no fucking idea then
Don’t forget voice calls! It has some rough edges there (my audio doesn’t always connect successfully, etc), but when it works the codec sounds better than a standard phone call and there’s no mass surveillance. I use it in place of phone calls for all the people in my network who have it, including my immediate family.