That would result in those fediverse servers theoretically requesting 333333 * 114MB = ~38Gigabyte/s.
On the other hand, if the site linked would not serve garbage, and would fit like 1Mb like a normal site, then this would be only ~325mb/s, and while that’s still high, it’s not the end of the world. If it’s a site that actually puts effort into being optimized, and a request fits in ~300kb (still a lot, in my book, for what is essentially a preview, with only tiny parts of the actual content loaded), then we’re looking at 95mb/s.
If said site puts effort into making their previews reasonable, and serve ~30kb, then that’s 9mb/s. It’s 3190 in the Year of Our Lady Discord. A potato can serve that.