Gnosis Safe and redundancies

I've been hearing some people advise using Gnosis Safe for extra security. I'm pretty well versed with hardware wallets, but I'm completely new to the concept of multi-sig wallets and how they work. Most importantly I'm concerned about redundancies if Gnosis goes down. Just right now I saw a post on twitter about problems with Arbitrum on Gnosis. With a hardware wallet, if the hardware wallet's company goes away and the wallet goes poof, I can still recover my funds in any BIP39 supported wallet.

What happens if Gnosis goes away? Can I still run the CLI on docker? What happens to the smart contract wallet/vault that's created? Where can I "take" it? Can it be imported into another multisig wallet?

Are multi sig wallets for individual custody overkill? Or with all the hacks and leaks going on, should I seriously consider it?