Definitely. Sometimes OT just has to happen. But if you find that the schedule can only be achieved by having the whole team pull OT for months at a stretch the schedule is wrong.
I’ve gotten lucky lately, landed in a company where the engineering staff is largely middle aged, with spouses and kids and all those great reasons to not be at work. I haven’t come in on a weekend in 4 or 5 years, only have days that go long a couple of times a year. It’s caused me to reconsider my earlier professional years.
As a corollary, I find that any work performed after 10 hours in a day will require revisitation. When one gets that brain-weary, one ceases to be productive, in 95+% of cases.
That, at least, has been my experience.