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I would assume the same, but unfortunately... that's a real life thing that I heard one say in a lecture. Well, not "Global maximum!" but something with essentially identical meaning, without the subtext of big error.
People may be aware of a lesson learned from math, but not propagate it through all their belief systems.
Even without propagation of math lessons it's generally taught that evolution doesn't find optimal solution but just solutions that are good enough.
It's also worth noting that various if you do an infinitive amount of minor design changes you can find global maxima. If I remember right the Metropolis–Hastings algorithm does get you a global maxima provided you turn the parameters right and wait long enough. It might take longer than trying every single possible value but if you just wait long enough you will get to your maxima.
Biologists also are often happy with solutions that aren't 100% perfect. The standard for truth is often statistical significance.