Skillz is a company that provides real-money components (gambling, iirc) for mobile games. If you have a mobile game, it's a platform you can tack on to allow your players to compete against eachother for cash (and so monetize your game).
Is this really that hard to comprehend? It's a slight twist on a ticket based arcade game or a slot machine. It's pretty common knowledge that they are a waste of money.
The concept of having a slot machine in my pocket sets off so many mental alarm bells that it’s incomprehensible to me that people would gamble on what looks like Bejeweled.
If it's players competing against each other, then skill-based matchmaking would lead to most players having a roughly 50% win rate naturally. But the win rates are the only real reason the OP gives for this being a scam. So the submission could really do with some extra context.
they claim to have very sophisticated anti-cheat tech that he was able to overcome with a simple MITM attack
This is from their IPO S-1:
"We collect over 300 data points during each gameplay session to feed our big data assets which augment all elements of our platform. Our key data science technologies drive our player rating and matching, anti-cheat and anti-fraud, and user experience personalization engine."
I worked there for about a month before it was named skillz. One thing I didn't expect was how much the psychology of a casual game changes when there's money on the line. Imagine playing 5 minutes of angry birds while waiting for a bus, versus playing the same game for bus fare.