The password is irrelevant, only the seed words matter. When you create a wallet, you are supposed to write down a series of words in a piece of paper, you can recover your wallet with that.
It's not irrelevant, wallet file + password allow you to access your coins, so it's a really bad idea to be careless about it. As for seeds, not all wallets have them, Bitcoin Core doesn't use them and will not use them in close future. If we are talking about wallet files from early days, there's almost no chance that those wallets have seeds, so finding or cracking password is the only way to access the coins again.