there are binance staff on bitcointalk, they just don't post as binance reps. everyone who is anyone in crypto uses bitcointalk or at least reads it.
Nah. Tons of people are long gone and will never come back. Tons never arrived here in the first place and started elsewhere. No vital discussion happens here any more. That'll be on more focused platforms.
As for Binance, I'm never going to trust an exchange that has its own coin to promote.