You can redeem stable-coins like True USD or PAX to a US bank account after passing KYC, with 1 token=1 USD. You can redeem up to 60k/day on PAXOS for a $20 flat fee per redemption, on tier 1 KYC.
It also works the other way, so they are an on-ramp, just with a slightly higher fee. However i wouldn't 100% rely on these regulated stable coins as an off-ramp if the crypto market implodes and everybody runs for the exit.