MetaMask, Ledger and Trezor are all compatible with BIP-44 recovery (seed) phrases a source says. The manual for BIP-44, below, however, says that secondary wallets on the same seed phrase as wallet #1 will only be discovered by external software recovery if they have a transaction history.
Does this mean that, if you created a wallet in MetaMask plus a secondary wallet #2 there, and want to recover these wallets on a different software or device like Ledger, that new Ledger will not detect the secondary wallet if no transactions were performed on it, only the main wallet #1?
Mainly just trying to understand the structure of collective wallets, given that one seed phrase supposedly can have hundreds of wallet addresses belong to it, which sounds like a huge security hole if someone relies on multiple accounts under that one phrase
Source material in question: