Not OP but i can confirm this too. Works fine if i test in my brave browser but totally unresponsive on safari. It doesn’t open up at all, the blue highlight when selected doesn’t even show.

I’m on 11 Pro Max iOS 14 beta

Probably not too many blue collar users interested in building a SaaS product, though.

Can you cite some proof of this?

As a counter-point, I work for a large national telco and our mass-market site and mobile app (usage in the tens of millions of unique users across all demographics) both use hamburger menus and our internal stats show that almost everyone understands that it's the menu.