Personally I don't like to provide my personal information at any casino too. But there is nothing to feel bad for receiving the same bonus amount as before. Stake has given us the opportunity. Now it's upto you, they aren't forcing us to verify identity. So they won't lose any real player.
I am only a small gambler, so these extra bonuses will probably not be very interesting for me, but if necessary I would provide personal information to Stake. They are in business for quite a long time and have a very good reputation. I already play over 10 years in fiat casinos where KYC is necessary, so I am used to it.
@tentan, as Darewaller mentioned, don't hesitate to signup. They are always a lot of promotions and from time to time they offer a nice deposit bonus.