"Extra" is dependent on whether the views on X came from users who would have normally clicked through to YouTube or watch, or users who would not have clicked.
That specific video (https://www.youtube.com/watch?v=fuhE6PYnRMc) was rather odd. He gave away "only" $95k in prize money, but also launched a car powered by 10 jet engines off a ramp across 10 scrap school busses, burned down a house with fireworks, and had a giant pit dug into which he crashed a train (after dumping various other things inside). It looked like a series of really expensive ideas that sounded fun, but turned out quite chaotic, felt less fun than many other videos (at least for me), and it is something like #50 by popularity.
I believe he didn't fake any of the actual stunts. Here's a making-of of a jet car for MrBeast: https://www.youtube.com/watch?v=Rri83pDN6kc
You'll notice it's a similar setup, but a red car instead of blue, 7 engines instead of 10, a landing ramp at the end, and it didn't clear the school busses. Meanwhile, in the released video, there's 10 engines on a blue car that makes it across the entire bus park. So assuming it's all real, that's at least 17 mini jet engines destroyed (at least I'd assume that none of them were reusable after this). I'd guess their price at $5-20k each (the latter is what I found for the PBS TJ-40 G1, which looks like the engine from the making-of). Add to it all the engineering work that was required, and I wouldn't be surprised if the jet car part alone exceeded half a million.
https://www.youtube.com/watch?v=1WEAJ-DFkHE is a more typical video, where he "reviews" expensive plane tickets. Starting by buying out an entire domestic first class section (let's guess this at 15k), two first-class seats on a long-distance flight with Emirates (~20k, going by the listed price which seems realistic), one of those first-class suits (~25k stated), a (again going by stated prices) $100k private flight, an advertising blimp ($300k), and a super-luxury private jet flight ($500k), so around a million dollars just for the flights before accounting for any other production costs.
MrBeast and numerous other huge scale YouTubers are actually boutique production companies. The top tiers of all these platforms have been dominated by operations not individuals for some time now.
Mr Beast makes all of his money to do his videos through sponsorships, partnerships, and by promoting his own product lines.
This is a WAY higher revenue share than YouTube does. He does not earn the full money for making his videos through YouTube ads, I can more or less guarantee this.
Source: I have a YouTube channel that was once very popular.
The CPM was $1.68. If he got that CPM on YouTube, I'm sure he would have far more choice words. A $1.68 CPM would be terrible for a creator of Mr. Beast's size, especially when by his own admission, the video was juiced due to the increased attention it got.
Sure the revenue share is higher, but the pie is almost 15x smaller.
it's not
his video production cost tend to be in the low multiple millions (like e.g. 3M)
and on YouTube he still makes profited with it (in average, not every video)
he is one of the biggest independent video creators
has no competition on X
and still would have made a multi million loss
I say would because uploading some old video which get very little traction anymore on YT probably still would be a neat extra income.
And yes I'm aware that the reason his videos are that expensive to produce is because he wants it not because it must be that way.
So someone with the reach of MrBeast who decides to produce 10k cost videos would make nice money from it.