The product manager of the project I work on is about 55 and many of the other PMs at my company are also age 40+. However I applied for an internal PM position and was passed over for a younger guy with less technical and managerial qualifications but better people skills overall.

I thought I was an excellent candidate because of my decade of experience in QA lead roles on sizable teams but I have gotten a reputation over time as having a bit of a hard edge personality-wise, which I'm working on fixing.

I cannot stress the importance of having good people skills in this kind of role.