IMHO, it would have been smarter (more tactical) if Musk's lawyers first filed a motion to dismiss before accepting the settlement. That would have forced a very different negotiation point on the SEC. A few extra days would not have made much difference in SP considering that it has dropped down anyway.
It takes (much) more than a couple of days to file an effective reply brief, which I believe would have argued not just based on the Securities Act and its legislative history (which the SEC is abusing), but would also have mounted a First Amendment challenge (the SEC is a federal agency trying to restrain Elon's speech).
These take weeks/months to prepare.
Plus to really rattle the SEC Elon would probably also have counter-sued: reckless action by the SEC caused billions of dollars of damages, and the SEC is also trying to harm Tesla unlawfully by meddling with its corporate governance. This would also have opened up the SEC to wider discovery, for Elon/Tesla to find eventual inappropriate links between SEC staff and short sellers...
If proven or strongly suspected Elon could also have added RICO (Racketeer Influenced and Corrupt Organizations Act) causes of action too, with triple damages.
But that would probably have been best done in the Reply Brief - which needs to be done carefully too.
Many months of delays. Years of litigation.
The SEC dishonestly and inappropriately forced Elon and Tesla to act quickly by asking for Elon to be removed as CEO
for life: effectively hanging a corporate death sentence above Tesla as we know it. The TSLA stock price reacted exactly like the SEC knew it would react and forced Elon and Tesla to settle.
I.e. the
only quick option left for Tesla and Elon was to settle under
extreme duress.
This is one of the darkest chapters in the history of the SEC: unprecedented recklessness and lawlessness and complete, utter regulatory capture to harm a single company as much as possible.
(Not a lawyer.)