But there is a reason, Ledger Nano S is out of stock for months.

You can find them in stock online at different places. You could also go with a Trezor.

Powering up Steem is another good option, but personally, I don't think it's smart to put all my eggs in one basket, so I diversify and for the other coins I hold, I wouldn't use anything but a hardware wallet.

Even when I couldn't get a hardware wallet, I stored them in paper wallets until I could. To each their own though.