As long as you only use it with (verified) Electrum, you should be good to go for many years.  Electrum is usually agnostic to firmware versions when it communicates with hardware wallets.  I've used both of my Trezor models with outdated firmware and Electrum hasn't had any issues transacting with them.  In fact, that's what I plan to do going forward.  I'll likely never update the firmware on them again, unless my Monero node forces me to update my Model T.  I'm done with Trezor Suite now that they've imbedded a mole into it.

Ledger's Nano shouldn't be any different.  I do suggest that you start looking for an alternative now while you have time, however.  If something happens in the future that breaks the ability to connect your Ledger to a wallet without updating the firmware, you'll want to have an alternative at the ready.

I do recommend both the Foundation Passport and the ColdCard.  Both products are produced by companies who seem to feel strongly about keeping bitcoin private, secure, and self-custodial.