Ian>I've been enjoying the pictures of the Business Genuis holding his remaining staff hostage at 1 am ...
Now that's interesting. Who's really the hostage here? The poor sods on the H1-Bs or the pillock Business Genuis who's in the hole for for 44 beellion US dollars plus interest payments and is utterly dependent on them staying put if he's to stand any chance not losing even more money? I think if I was on an H1-B I'd have trousered the 3 month's severance and pissed off home to look for a job with a less poisonous boss.
Ian> so he can diagram how Twitter works for them in a sort of the front end talks to the back end via the middle bit level of informed detail...
Not only "Business Genius", but man-splaining at an epic level.
At the end of the day, the Business Genius doesn't have, and never had that $44billion, so he's in hock to a lot of people. It's amazing how people fall for this (see also Elizabeth Holmes and her device that was obviously bullshit and that FTX guy who's well... obvious bullshit, you know how it goes).
As for H1-B visas (these are specialist visas for overseas workers to fill roles that can't be filled by someone in the US), there's no grace period, the day your employment ceases you are liable to immediately leave the US or be subject to deportation proceedings (the only credit you get is that your employer should pay reasonable costs to send you home). If you do overstay, of course, to clear up your affairs (you may have family, partners, you know, a life you can't curtail with a few days' notice, not to mention re-establish your life in another country), then that will probably disqualify you from a future visa (or at least lead to awkward questions). It's a visa status that's easy for unscrupulous employers to take advantage of.
Jaded is right though, I think he might be trying to practice Thought Leadership. I'm sorry, but even a Business Genius should not take on a Thought Leader. I'm pretty sure I once sat in a meeting and someone asked what are calling that bit between the front end serves (Angular, UI) and the back end (the DBs and Elastic) and I gave it some thought and said 'the middle bit.'