Is using legacy P2SH multisig at derivation m/45' still safe?

The early, now called "legacy", multi-sig didn't really have a standard for derivation as I understand. For example contrarily to native segwit multisig, where m/48'/0'/0'/2' seems used by default by pretty much every software and hardware wallet.

So for example Electrum, if I'm not mistaken, uses m/45'/0 for legacy multisig while a hardware wallet like the Keystone used m/45'.

As a sidenote apparently on the Keystone hardware wallet I cannot even export any "xPub" other than m/45' for Legacy P2SH multi-sig.

I know you can (and I already did) use native segwit multisig but this is not what I'm asking here.

What I want to know is if legacy multisig using m/45' is safe? For example in a 2-of-3 or even 3-of-3 multisig. Would there be any security issue or considerations?

Several wallets (including Copay, Electrum, Sparrow too I think) aren't using that path by default anymore. Is it because it's unsafe?



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