What do you propose for people securing considerable sums of bitcoin? For instance, wealthy people wanting to put some of their money in bitcoin and take self custody of it without too much compromises in terms of security. Do you think self/collab custody with hw wallets makes sense for them?
Phones are pretty secure these days. Apps are sandboxed. You can flash them with hardened firmware like GrapheneOS. You can use a dedicated phone as a wallet and never connect it to internet.
IMHO is too much paranoia with these HW.
Use the 3 levels stash method and your hodl stash is absolutely secure.
I had in the past some HW but I gave them away to noobs. Not useful for me at all.