Clearly Fornite is making too much money and they feel the need to spend a fraction of it on their customers... pity they couldn't use it to improve the games longevity and develop the genre rather than just milking the cash cow until it's dead.
I feel like prize money that high is kinda pointless for the actual winners. There's a certain point at which there's little difference between "a TON of money" and 10 times "a TON of money", and $100M is definitely in that territory. If they've got a $100M to give away in prize money, I feel like there's gotta be better ways to divvy that up. But whatever, it's their money, they can do what they want.
Oh cool 100 million dollars that could have gone to the dev team to improve the battle royale and the co-op wave fight, which they started as and have now dropped like a hot sack of potatoes because BR games are all the rage rn.