Honestly? It felt like the exchanges started delisting XMR on purpose. Rather, they thought to manipulate and so on. Alas, it did not work out. On the contrary, the community has shown that it makes absolutely no difference to them whether a given asset is traded on the x-exchange or not. They did the right thing, in a word. They didn't follow the example of decentralized platforms. As far as I'm concerned, that's the way it should be. By such actions they have shown - that it is absolutely not about the funds, but about the XMR technology.
P.S. Do you think, in the shortest possible time, the other exchanges will remove XMR from trading pairs in a similar way? I think it's inevitable. I mean, regulation is coming. 
All centralized exchanges that want to operate in countries with crypto regulations, legislated by governments, must compulsorily comply with these regulations, otherwise they will not obtain a license and will not be able to operate legally. If to comply with those laws, exchanges must remove privacy coins from their trading pairs, they will certainly remove them, since exchanges make more money from fees from other markets than from privacy coins alone, you know, it's all about money.
All exchanges will do it, at least the best known and highest volume ones, but I don't think that will happen overnight. As for XMR, I wouldn't worry, decentralized exchanges are its birthplace, although many people don't know it yet. Furthermore, the #DevelopmentTeam knows very well what they are doing and what direction XMR is taking and I am sure they are not worried about XMR disappearing from centralized exchanges.