not an issue if you already have accounts, they are also not scam exchanges and only 2 examples, bitfinex also accepts btg. i prefer if you stick to the facts and not exaggerate based on emotion.
Doesn't hitbtc require KYC documents these days? Also, Hitbtc is known for buggy platform. Coins disappear randomly etc. And support can be slow... Bitfinex is probably OK for dumping BTG and BCH. These things are easier for long-time bitcoiners, and tech-savvy people in general. Some people only use e.g. Ledger hardware wallet and have no idea or experience of raw privkeys. Old-timers have bias regarding these things.