Are you suggesting that all students should show up to the first day of class WITHOUT any of the required equipment and expect to borrow it all??
If that is what has been arranged. Here Intro to Tech is a two day course typically run over a weekend. Travel is likely involved. You want to split it over a day to do kit education, a few weeks off to order and buy the kit, and another day in the water? All to avoid keeping an extra twinset or two and some regs to hand?
Insurance? Don’t dive centres in the US rent out kit to recreation divers? Do OW instructors expect a new students to turn up with a full set of kit? Intro to Tech is mostly shallow skills and really no different. How do people offering CCR try dives manage?
Some people will have vaguely appropriate kit and be fine, some people will need advice about kit they have, some about kit they are still to buy and some will only be curious about the whole deal and not want to be buying 2k of stuff. It is only an introduction.
So, if you fall into the last two categories an instructor which can’t provide kit is not useful unless they are very close and prepared to hand out advice before really starting the course.
Can you tell if a student needs twin 10s or 12s without meeting them? A tail weight?
The wing I did Intro to Tech in is gathering dust in my garage. I leaned on the course it wasn’T a great choice, and replaced it eventually I might use it if I lend my proper kit to someone who wants to try out a twinset. When my GF did Intro to Tech the instructor had a whole room full of kit to choose from.
Really, a good instructor is providing a service to a customer. They ought to take into account the needs of the customer and how to best fulfill those. Is having a customer spend a lot of money to go down a route they might decide against best? Or is showing them what the instructor considers optimal kit configuration before spending the money better?
I can see that in the OPs location choices might be limited. If the only shop doing ItoT is trying to make money selling a lot of kit then that is a shame. Other agencies have similar courses and maybe those instructors will be able to provide the required service.
Beyond the intro courses, should a deco cylinder be steel or aluminium? What size? What to buy to take on the course? Silly really.