I withdrew all cash from Robinhood and urged everyone to do the same. Funds are not safe. Brokerage accounts are insured by SIPC (similar to FDIC), but you don't want to wait N months to get reimbursed after whatever lengthy court battles are about to go down.
Withdrawing cash is the easy part. Moving the stocks to another brokerage seems like a pain. and I fed don’t want to liquidate my positions for tax purposes
If you're a US person, I don't think you need to liquidate anything - you can request an ACATS transfer and your securities will be moved directly into your new brokerage account. This is a service run by the NSCC so I think would apply to all brokerage firms.
