A few degrees difference in ambient temperature can drastically affect your exposure times, and god help you if you have a print failure and forget to clean and filter your vat.
As far as model complexity for 3d printing, you absolutely still have those issues, unless you only ever print pre-supported models (which I absolutely love, but aren’t ubiquitous.)
I have a pretty heavily customized ender 3 and I don’t recommend that to people who don’t want 3d printer maintenance as a hobby either to be frank.
I will say though, my issues with resin are never with the machine itself, it’s always the material and the specific prints.
“per my last email” = you’ve critically failed your reading comprehension check and I’m real tired of holding your hand on this, which is why I’ve cc’d your supervisor.