For me, the only calls that ring through are the ones coming from people who are already in my list of known contacts. Everyone else gets filtered through NoMoRobo Max. And all spam callers so far haven’t bothered to try to get through to me. They just hung up.
Likewise, the only text messages that get directly through to me are from people already in my list of known contacts. Anything from any unknown number gets filed separately, and I have to periodically go check to see who or what has sent me which messages I haven’t seen.
So far, I haven’t had anyone text or call me that was legitimate, who wasn’t able to get through one of those filters. I might have had to call them back after seeing their text message or hearing their voicemail, but that’s as far as it has gone.
I am not yet dissatisfied enough with NoMoRobo Max that I would be looking for alternatives. But that said, I’m glad to know of a good alternative that I can try if/when that happens.