I've long held the belief that well-meaning adults who complain about "school these days" are mostly just talking about their own educational experience - either to complain about how they felt about it as a child (20+ years ago) or to elevate their nostalgia over whatever they imagine happens in classrooms now.
Educational professionals appear terminally prone to fads and magical thinking, but it's the people outside the school - parents and other adults - who seem to have the clearest conviction about things they know little about. Appeasing ignorant people makes bad public policy.
Yes of course I don't actually hate what school is now. Not directly. How could I, I'm not even allowed to observe it! But I definitely hated what I had to do and it did not work for me. And that is useful information when I'm helping my kids.
If you spend any amount of time listening to people complain about what is or isn't taught, you'll quickly discover that most things they hate aren't taught and the things they wish were taught are, at least in some form. Much of the rest is based on either outdated or misunderstood knowledge/beliefs.