> Instead they use rigged instruments like common ISOs with liquidation preference and 90 day exercise windows to intentionally screw early employees over.

I'm so tired of this being repeated as if founders choose ISOs to screw over employees, it's flat wrong. ISOs offer the best tax advantages for employees. The 90-day exercise window is a government-imposed thing. If you want it changed, go talk to them.

I'd much rather give an employee an instrument in which they don't have to worry about any taxes at all until they actually want to exercise than have them sign a document they almost certainly don't understand and receive stock they get immediately taxed for and be confused why the IRS taxed them for stock they can't sell and that might end up being worthless.