Is the "their" above WotC?
If so, it is is definitely their take on it. The playtest was both barrels of all of the things I wrote above and the "surveys" were extremely slanted toward "on a scale of GM Empowerment...how much do you want to see Natural Language take Damage on a Miss and Warlords shouting arms back on behind the woodshed and beat them to death with some Rulings Not Rules?"
Now does everyone who plays 5e agree with all of its micro-design decisions and class iterations? Of course not. And as the honeymoon flames (it was basically heresy to complain about anything 5e for probably the first year after release) reduced to a healthy simmer, people who loved and played the game challenged aspects of its design more and more (the "big ones" you mention are probably Bounded Accuracy and the Top Down Adventuring Day design and the impacts on play of both of those decision).
But its still as beloved as it gets and I doubt hardly anyone who plays it doesn't appreciate (and defend...like we see here) the core tenants of its Modular, Rulings Not Rules, GM Empowerment, Table Heterogeneity design.
Less than you think I'm sure. I've seen people play D&D games they hate, under GMs they loathe (both socially and as in their actual game-running), for years...week-in...week-out.
Humankind is capable of all brands of Stockholm Syndrome and TTRPGing is one of the more interesting instantiations of it.