Actually that would solve virtually none of them. The overwhelming majority, probably north of 95%, are one of two things:
Scammer sees you post interest in an ad, sends you a PM that says something along the lines of "PM the seller at such and such email address for faster response" and if you do, they act as if they're the seller and ask for a deposit to hold it for you.
or
Scammer sees you posts interest in an item, does a quick post search to see if you've ever posted your phone number and if you have they send you a text pretending to be the seller
And you'd likely be shocked how many people fall for both of those.
At the end of the day, what solves 100% of the scam attempts is don't ever send funds via CashApp, Venmo, Zelle, whatever unless you know the person personally and can be sure who you're sending it to. If you never send them money, you can't possibly get screwed.
Should be a sticky if it isn't already.

