The stakes are lower. As a CTO (hypothetically) I get to hire 4 junior devs, 2 senior, and 1 architect.
Hire the wrong junior? No biggy, he'll be less effecient but we may yet turn him around. Anyway, I get three more tries. Anyway, he'll leave after 2 years. They always do.
Hire the wrong architect? I'm stuck with him, for a very long time. Moreover, I now have the wrong guy for a high-impact job. And one that is very visible.
So you betcha I'm going to be much more picky, the more senior the job becomes.