I've read a bit too and the mcdo thing happened when he was a teenager, ofc a lot has changed since then, he studied, gained experience etc...
And that's what most people do in their post-McDonald's days--or at least they move on to higher-paying jobs. Very few people work for McDonald's for long periods of time, even if they're a manager.
But even if they do work in McDonald's for 30+ years, why should other people look down on them? Your job does not define your intelligence nor your worth as a person. I see someone working hard in an honest job to pay their bills and put food on the table for their kids, then they deserve respect, not denigration because I think I'm better than they are because of my job title. Maybe Satoshi worked in McDonald's for all we know.
If there's anything to be worried, it's CZ playing 4D chess with his users.
Pretty much this. CZ's previous jobs are irrelevant. Binance's tendency to be less than honest about hacks and the security of their user's data, to promote their centralized shitcoin by artificially inflating bitcoin transaction fees, their terrible customer support, frozen accounts and locked funds, and so on, are the reasons you should be concerned about Binance.