That’s not why those marketplaces say so. Those marketplaces state that because it deters the lowest effort scammers (pretending to offer cash, paying through gift cards, etc). It says nothing about how good Venmo/PayPal is at handling fraud or detecting it.
Sure it does, I've even been the victim of scammers when buying festival tickets. I paid with PayPal G&S, the scammer deleted all their messages with me, obviously didn't send tickets. It took 15 minutes with support and I got my money back, no harm no foul.
Because of this all the scammers pretend to only have Zelle.
