TL;DR: I have had this experience. Don't try to reason with creepy management. Don't work somewhere that you're not being fairly compensated for (Even if its not cash, it needs to be fair.) They'll never change, and if you let them give you a raw deal, they'll never give you a fair one. I've worked in this situation. No way to know specifically what happened at Airy, but I worked for a company that was almost exactly…
One red flag that I overlooked, to my dismay: make sure the founders / executives have a consistent vision about where they want the company to be and how they think they'll get there. If management is not on the same page you are probably walking into a clusterfuck that you'll regret.
Often startups have a sort of script they read from when interviewing employees to give the impression that everything is fantastic. On the surface it will appear that everything is harmonious but you absolutely need to see through the smoke and mirrors to make an informed decision.