I actually had a draft post about why I think BlockFi is a very risky custodian to park your assets with, but I never got around to finishing it up and posting it.
1. They are mega cucked on the GBTC "arb" trade.
2. They screwed up a promotion and credited people with BTC instead of USD (ie. credit 100 BTC instead of $100), and apparently people managed to withdraw BTC before BlockFi realized they were processing withdrawals for people that actually don't have any BTC.
I migrated from BlockFi awhile ago. With their really low rates and all their problems, I think that it is actually very risky to continue leaving your money with them.
I have no funds in BlockFi and I would not recommend anyone to open an account with them or to keep funds with them at the moment.
I personally have over 8 digits with Celsius.
Just saying what I have done for myself. Not asking you to follow suit.
Good luck and stay safe.