Although you can't have two whatsapp accounts on the same device, you CAN have one whatsapp account and one whatsapp business account (and they are seperate apps). I use the Hushed app to get a burner number that is independent of my sim, and can be recycled at will, then use my Hushed number for whatsapp business (they are seperate apps so no unexpected notifications etc)
If I need to recycle my Hushed number because of e.g. unsolicited messages from a WG, malicious ClientEye report, etc, then the whatsapp business can just be migrated to the new Hushed number with the press of a button. Whatsapp business is free, Hushed is subscription based. I pay 11.99 for 90 days, but I think there is a 1-year option too. Works really well, and no-one that you communicate with can tell that you aren't using a standard whatsapp account.
This is of course only relevant for those of us who can conduct our punting business on the same device as our personal lives.