You seem to be unfamiliar with the AMT trap? I would recommend Googling it. It impacts people who are not well-off prior to exercising their options by triggering AMT upon exercise.
- https://www.holloway.com/g/equity-compensation/sections/the-...
- https://thestartuplawblog.com/immediately-exercisable-isos-t...
If you are rich you can afford it. If you aren’t, you are forced to take zero.