You're probably on to something there. Sadly, the opposite of this is true too - it's incredibly hard to find competent QA Engineers (not testers) because they

You're probably on to something there. Sadly, the opposite of this is true too - it's incredibly hard to find competent QA Engineers (not testers) because they all realize very quickly they can make more money as rank and file software devs than QA-side specialists, even if their role in QA is leagues more complex.