Domestic abusers shouldn't have guns...this is true.
The problem is that responsible people get protection orders issued against them all the time (and what's being discussed are protection orders, not convicted abusers)...because many states require no proof other than the word of the accuser...which inevitably leads to people weaponizing the process out of petty revenge or anger solely to make life hell for their ex. People convicted of domestic abuse would still lose their guns. What the article is discussing is whether people who've been accused without evidence should continue to have their rights stripped or not.
I think it's too late for this to be useful. Number spoofing is ultra-common these days and most of the unwanted calls I receive are from spoofed numbers that appear to come from local areas.
If we start blocking the spoofed numbers then eventually we'll just be blocking every possible combination of digits that can exist.
What we really need first is better detection and blocking of calls using spoofed numbers.