I've been running and using a puppeting bridge [1] for my Matrix instance for more than 4 years with 3 different numbers and no problem at all.

The controls they have in place are probably based on behavior, rather than on access.

[1]: https://github.com/mautrix/whatsapp

WhatsApp will ban you if it detect any kind of automation, if you use this or an other wrapper you will -very luckily- get banned, even without making calls. They want you to use their paid business API

Good to know WhatsApp is at least somewhat proactive against scammers.