Rainbow TreeCare interview questions

The interview was around 30 minutes. I had to ask the person interviewing me to speak up, as they were using the speaker function on what I would assume was a standard office phone. It was revealed to me that I would not actually be a climbing trainee "right away", as the interviewer put it, but I would start in lawn care and after 6-8 months then I would begin training for tree climbing. It was unclear whether it was actually full-time or not, the interviewer made contradicting statements over the course of the interview. It also wasn't clear if there were benefits. The impression I got is that they are looking for lawn care guys and draw people in by advertising for the better-paying climbing arborist position. I suspect they have trouble getting people for lawn care, as their starting pay is $16 per hour. With all the vagueness, I declined to continue the interview process.

Interview was set up in advance so you could be prepared. But it seems they want younger workers. (1) So they can be told what to do? (2) assumes that people over 40 too expensive (3) That maybe over qualified leaves fast? (But today, 18 months seems standard length of employments