we think you’d be best with a bigger team with a better support network
Probably dodged a bullet anyway since there’s only 3 technicians and they’re putting a lot of responsibility for the shit payment they’re handing out.
That really seems to answer the question, and I don’t think you need to assume any discrimination from them.
They’re a small team, they need someone to come in and hit the ground running. They feel like you’d need training/support despite your technical knowledge.
Don’t get hung up on job rejections, just move onto the next. It’s a numbers game.