I'm more concerned about robocalls soon being able to have an actual conversation in your local dialect, and lie with ease about whatever scam they're running. That's going to fool some people a lot more than a scam call from "Microsoft" or any other company, or relative asking for money.

A two component clear coat will last longer. Ask the Rust-Oleum people if they know what works best, not what they're told to sell, applied over your current countertop.