Twitter would have probably paid out about $100k for this to be reported via a bug bounty program. $100k is nothing for the risk taken, they could have made a lot more.
For taking the risk of impersonating several of the richest and most powerful people of the planet? yeah, I'd say yeah.
Of course it's not stopping at 113k, but even assuming it'll stop at 500k I wouldn't say it's worth it
it if seems small it probably because twitter has been under constant attack by crypto giveaway scammers since early 2018. the pool of potential victims has shrunk