It's not meant to be apologising, it's meant to provide context so that engineering teams can be more comfortable pushing back and retaking control of the solution space.
Should PM's be better at not steam rolling engineering teams? Yeah, 100%, it's literally the #1 thing that I consciously work on when it comes to personal development and self discipline etc.
But it would also help if engineering teams were more... I want to say "aggressive" when it comes to solving new problems and building new solutions.
I get that "new features" is seen as a PM thing and we always get shit for pushing "new features" over things like fixing tech-debt. But for 95% of products, "new features" are going to be a very consistent reality and often they're responded to extremely negatively by engineering teams, even (and some times especially) when those engineering teams are placed in the drivers seat to come up with the solutions.
This kind of apologizing for horrific behavior undermines what I thought were otherwise strong points.