Interesting; I'll have to try this. In my experience pressing 0 has a decent chance of working as a shortcut to a human operator (versus choose-your-own-adventure DFS searching for the right node in the menu tree, which can take ages), but obviously it doesn't work when they don't have human operators at all.
Greed ruins a lot of things, as does the notion that everything can be sacrificed for growth; the logical conclusion of quantity over quality is everything sucks.
This is incorrect. You cannot exercise ISOs after 90 days post-employment. What you pay to the company at exercise isn't time dependent: the strike price is fixed at time of grant. What you may be referring to is the AMT, which does fluctuate depending on FMV at time of exercise, but that doesn't affect the 90-day limit.
The ability to extend that period isn't always up to the option-granting company; while it is possible for non-qualified stock options (NSOs), incentive stock options (ISOs) must be exercised within 90 days of termination of employment, by law.