1. Is Tom's Career Over?
Fighting games, video games aren't a career. His prominence as a tournament player and possibly as a content creator could be done. Unless he's banned from tournaments, he can come and go to them as he pleases. This community looks for a chew toy. Tom is their favorite because he squeaks the loudest. Once he stops squeaking, this community will forget and move on to the next chew toy. Eventually there will be nostalgia for him and the community will ask "Whatever happened to Tom Brady?"
2. How Can Tom Bounce Back (If you answered NO with #1)
Recognize that his actions were immoral, if any amends can be made, do them sincerely and privately. No need for some public show to prove anything.
He needs to take some time away. Just go and take care of real life and remember that these are games, they will always be here.
3. How bad do you think MK11/FGC will suffer from this incident?
I actually have a lot to say here:
A. There are ZERO regulations on these kinds of streams. These people are essentially BEGGING you for money. They are not legally obligated to spend this money in any way other than they see fit.
B. NOBODY signed a contract, and legally speaking, no money was actually stolen! That's right! Legally speaking, money was given (under false pretenses, which is certainly immoral), and it was spent.
C. Why are you giving money to someone who obviously does not have the money to go to these tournaments? Anyone who has donated to someone who can't afford it, you're only enabling them. If someone can't afford it, then they need to save their own money or choose not to go. Force these people to be responsible adults. They'll be better off for it in the long run.
D. The FGC at large needs some kind of 3rd party who can verify the expenditure of funds for this reason. Sending money to anyone's personal paypal or venmo is simply a donation with no legal binding. There needs to be some kind of regulating body that approves, oversees, and verifys the proper expenditure of any funds collected for a that donation stream's specific purpose.
In the end, I think the FGC won't SUFFER from this, I think it will be forced to GROW from it.