Can't regular bech32 addresses begin with a p?
I don't know what you have in mind when you say "regular address".
Bech-32 encoding is a rather simple encoding of
any data that takes an octet string (8 bits) convert it to 5 bit chunks and then converts each chunk to one of 32 characters defined by BIP-173 (that is qpzry9x8gf2tvdw0s3jn54khce6mua7l).
For an address we add the witness version as its first 5-bit chunk without needing any conversion so when it is 0 you choose the first char that is "q" and when it is 1 you choose the second that is "p" and so on.
they are all "regular addresses" with a different version.
By regular I meant what you point to be as bc1q. So bc1p is it for the new one. I didn't realize it was bc1q, but bc1 then random string. Im not a segwit user myself, still only use legacy. There's no way in hell the regular average joe user will notice any of these changes. That's why I insist: we need everything to be "mixed by default" somehow, and optional would be the clear transactions, ideally. What I mean is, the end user should just have to click "send" and that would be by default a mixed transaction. Then have some box you can check to not mix it optionally. This would be the standardized functionality of all wallets. That's how we reach proper fungibility. Otherwise we are going to start seeing horror stories regarding chainanalysis and innocent people ending up with BTC that was "tainted" attached to their names when they deposit in exchanges and whatnot. The only way to avoid this is that everyone by default mixes coins.