So let's rephrase - anyone BUT elon shows up with a request to define what would be an offer that wouldn't offend. What should the offer be ?
Okay, I got some down-votes for taking the piss, fair enough, but your question, if I am reading it right (and it really isn't well structured), of, "what should someone who isn't Elon do?" is a bit of a nonsequitur. I'll explain why.
What Elon has done here is to take a natural disaster, and use it as an opportunity to make a sales promotion. What he has "offered" in the guise of disaster relief appears to be a month's free trial subscription, to an otherwise expensive service. What should he have done? Not that. Honestly, not trying to use a loss-leader sales technique to ensnare new customers on teh back of a human tragedy.
What should people who aren't Elon have done? What they are already doing. Offering genuine disaster relief. Also, at this point, I should point out that the rhetorical device of "if you think that is wrong, what should be done instead" is a logical fallacy that blames the observer. The format for this is, "Oh, X did Y wrong did he/she/t? What would you do instead?" This presupposes that someone criticising the actions of another for being incorrect in some way is responsible for putting those actions right. This is a form of the tu quoque fallacy.
As it happens, Elon didn't "show up with a request to define what would be an offer that didn't offend," he "showed up" with a well known high-pressure sales tactic, with no sort of consultation on what was required, or how he could actually help people.