If it wasn't for https://hiya.com/, I'd be at the end of my wits. Seems like the number of fake calls has ramped up exponentially in the last months. I finally just set it up completely block all telemarketing, spam, scam, fraud calls.
That gets the job done, but rather than modify each of your existing contacts (and each new one), consider just turning on Do No Disturb and setting your Do Not Disturb level to "Allow Calls From All Contacts" (or a particular Group or Favorites). These are iOS options but I assume there's an equivalent in Android.
The best solution I've found is to just go into the Google Dialer app and set the option to not ring on any call suspected to be spam. I still do get spam calls that haven't yet been reported, but it's down to only about 3-4 a month.
Not sure if Samsung phones / other android flavors have a similar feature or not.
Eliminating spoofing is probably impossible without infrastructure revamps that aren't realistic even augmenting with spam filtering at the telco level. But the current situation is at the edge of the tolerable and people will just stop letting calls ring through.
Obviously, my kids (and their friends/school) are only one data point ... but yeah, for them, it's already dead.
I can't speak to the manpower dedicated to nor the pursuit of these reports by the FTC, but this is definitely a regulated issue.