I saw an apprenticeship class that started with 50 .... and, four years later, had dwindled to 18. The three oldest members were there at the finish.
Indeed, one of them had not been officially 'sponsored,' and had to pay his own way. He worked for a non-member EC, and ... silly as this sounds... had his EC license before he could get a "journeyman" card.
I don't know what it is that folks fear about an "older" apprentice. Heck, I was past 30 before I was ready to actually start learning!
A man doesn't reach 40 sitting on his hands. He's had to learn SOMETHING. Nor is he overwhelmed by teen-age hormones. I am a bit tired of seeing newbies who seem to think that the purpose the contractor exists is to provide them with more, more, more.