How many people do you know in the industry without CS degrees? A lot of those folks came in through bootcamps, whether they cop to it or not.
People tend to play down their bootcamp experiences because of stigma associated with it. It’s possible that there are bootcamp grads that don’t mention it because a lot of people think lesser of them.
I can see why folks might want to hide their bootcamp path if they already have past non-bootcamp experience they can point to. In all fairness, most engineers, whether top-10 CS school or bootcamper, tend to hit a wall around Senior or Staff. Without knowing the true denominator of bootcampers we've hired, I can't properly answer the question of whether bootcampers tend to do better, the same, or worse at these levels than average.
People without CS degrees or degrees at all are fairly common, including at staff level and above. Many of these people have been in the industry since before bootcamps became a thing.
It doesn't include any information about their education but what I can do is pick a selection of the staff level engineers at random and look them up on LinkedIn.
Here's the highest level of education attained by the first 50 I looked at:
7 had a PhD in Computer Science
1 had a PhD in Physics
1 PhD in Electrical Engineering
12 had a master's degree in Computer Science
1 had a master's degree in Computer Engineering
1 had a master's degree in Information Management
13 had a bachelor's degree in Computer Science
1 had a bachelor's degree in Electrical Engineering
1 had a bachelor's degree in Information Technology
6 did not list any educational experience
6 I could not find on LinkedIn
I did not see any that mentioned a coding bootcamp explicitly.