What is the point of your comment? That it isn't a problem for you so therefore it shouldn't be a problem for the remaining billion of WhatsApp users?

> With modern Android's anti-spam features, I can even dodge spam calls to my phone, so this is not a problem for me.

With those modern anti-spam features, you leak all call details to those providers. Read up their ToS.

I have t mobile. Sometimes I get calls labeled "scam likely".

https://support.t-mobile.com/thread/139000

I'd like to know more about the anti spam features. Right now, my anti spam tactic is if an incoming call doesn't start Google voice saying "to accept press one", it is likely something I don't care for.

I'm all right with this. I also use Google Voice, so giving call details to the people I'm getting my calls through is not something I would be worried about. Even if I weren't, I trust Google.