Another Broken Egg Cafe interview questions

I applied on Indeed and was texted by an automated system to schedule an interview. When I arrived for my interview, the host told me to fill out a brief application paper. The assistant manager came over, said hi, then asked me how old I was. I answered reflexively. (I am in my thirties.) He then told me they weren’t hiring, but he’d have my information if someone didn’t work out. That was it. No brief questions to know if I was worth asking to come in if someone quit or was let go, no looking at the paper I filled out, didn’t even ask my name. Really uncomfortable. I called later because I thought maybe he didn’t even know I was supposed to be there since the whole interview setup was automated and they aren’t even hiring, and I thought maybe he’d be able to tell anyone else scheduled to not waste their time. He said he knew the listing was still posted. I’m annoyed at the waste of my time, yeah, but mostly I’m really, really put-off by him asking my age straight out of the gate. The other hosts I saw there all seemed well under my age. He looked younger than me as well. It just felt… off and questionable.