if you were able to ascertain with 100% accuracy that an ad was not a security or privacy violation
Security isn’t the only part of this.
if viewing ads on your PC had as little potential for harm as viewing ads in the newspaper did, would you still block them?
I basically already do this with the radio. The moment an ad plays, the radio gets shut off. I turn it back on at the next 0 or 5 minute mark and it’s over.
Advertisers do not have a right to force me to listen. The same applies for internet ad blocking. One of these is just automated.