Not necessarily.
Not necessarily. Mentor competency does not require or equate to leading a large firm. The structure today would require even closer supervision of what is now a trainee by limiting the number of trainees - hence superior as it increases the responsibility of the mentor. I knew of 2 SRAs who paid someone else to do their demonstration report. Some of the best education and mentor-ship I received was from non designated Appraisers who had more knowledge, common sense and experience than the designated ones they worked for.
Our MAI was a knowledgeable albeit ...very busy man engrossed in his love of commercial work.

Matter of fact, I once had a blowout with an SRA I worked under for a
very short while. It was over fixed security bars on every window and door that had no release latches. Rather than being a potential safety hazard issue his training mandated that they be adjusted for positively merely because they existed as fixtures and the comparables adjusted for not being death traps.
Take classes and learn
critical thinking skills. Be your own education advocate.
Since when does quantity equate to quality?