I say that blunts it a bit because I think I don't blame engineers to look for someone like them — it comes easy, it is probably easier to judge someone who you feel shares your own life experiences.
But yeah, some years back we interviewed a guy for the team who was about my age (early 50's at that time). I thought he was top notch. But a younger engineer on the team pushed hard to reject him for the role. Why? "I think he's a bad fit for the team." That was the only reason we could get for his rejection.
Sure, just an anecdote. I see red flags now though when someone says "not a good fit" (whatever that means).