Every hardware wallet has this issue at some point. Can your heirs use your hardware wallet in 15 years? They'll need so many firmware updates that the device will probably be unusable. So they'll need to buy a new one, anonymously, if the product still exists or it doesn't have a "feature" that "conveniently" separates your seed into 3 parts and shares it Edith3 different companies, like Ledger did.

Seems something like a SeedSigner is much more future proof and doesn't have firmware vulnerabilities issues.