It’s a shame he didn’t reply. There should be a pinned thread regarding fake propellers as that’s the most important replacement part on a
Mavic 2 Pro - just like tyres are on a car.
At least with a car you won’t lose it if something goes wrong with 1 tyre (unless it’s a freak accident where the car rolls) but with a drone and a single propeller failing high in the sky that would be catastrophic.
There’s so many 3rd party and counterfeit spare parts & accessories available online it’s hard to tell what’s safe to use and what isn’t.