You might want to check out pools like F2Pool and Slush Pool. They’ve been mining FBTC lately. Their stats will give you a good idea of where the hashrate is going.
I didn't think "slush pool" AKA Braiins pool was running FBTC and having just checked I can find no listing of it. So, where did you get that idea from?
F2Pool and Spiderpool has it listed if you dig deep enough.