It's probably because Wasabi users starting using Kruw's coordinator after zkSNACKs stopped their coordinator & became a wallet service. It would be better if btc volumes were distributed between them for balance. There's 3 coordinators in Wabisator's site there could be others we don't know about.
For some reason though, it looks like the whole traffic is going through one coordinator. Wouldn't it be better if the rest of the coordinators were used as well?