Works just fine for me. Though it's been a while since I used anything else, I don't really have a frame of reference. That being said, I can install ublock origin and dark reader in firefox so I won't ever use anything else on my phone.
It does seem slower on my Samsung Galaxy S10e, but I just downloaded it and as you said, there really isn't a great alternative, so for now I'll use it. I'm sure that someone will develop something better at some point.
Somehow it's shit on 60Hz displays. My 120Hz display phone, it's quite snappy. But on my older 60Hz display phone, it's unnaturally slow. If your phone isn't HRR, then maybe this is it? I don't quite know wtf is wrong with it