You do not need to use crypto exchanges because I think you are a forex trader and you prefer forex but that does not mean crypto exchanges are bad. I prefer perpetual and futures on crypto exchanges.
Yeah, there are orthodox people who never ready to adapt new things but instead of giving a try on new developments, they do complain; which is the exact scenario, I am smelling with OP. Crypto is kind of adapt or die technology. If you start ignoring crypto space for whatever reasons you cooked up, you may stay where you are but new developments will keep on flying at its own pace for sure.
Crypto exchanges? They’re like a broken elevator—complicated, frustrating, and you’re better off taking the stairs.
I can revert back these with respect to forex platforms as well. Probably you are talking out of your own experiences or some assumptions. Personally I have been using both crypto and forex platforms for long times hence you cannot derive a common scenario among these two.