More Than Just A Fanboy
No. The site could die tomorrow, but the damage it's all done. There's no guarantee that the site could not come back with the previous administration, or even worse, with new administrators making even more damage to the fandom. Derpibooru put too much effort making terrible decisions, their legacy is a wound that will never be erased. Cauterized? Probably, but never erased. And how I said before, what guarantees the site couldn't come back, and worse than before? After all, Derpibooru got meek visitors, easier to manipulate; That's whay they wanted since their stupid politically correct party started the previous year. All the people who hated those trash are here, in alternative Boorus, or even completely out of the fandom.
As a matter of fact, even artists left the site, I need to remind you, but others are still in Derpibooru or they don't really care about their art being posted there. I know all of this could sound sad, but the dead of Derpibooru won't change anything that easily. If Derpibooru with all their users died, forsaking the website and turning it into a wilderness of nothing, that could make a bigger change, but that wouldn't be enough too. The posibility of a new site still exists. And the artists with extremists ideas or the brain washed will eventually find another place to post their posion.