I'm just going to come off as really cynical but I can't help but feel it's worded in a way that it's the players fault somehow.
Like "Hey, you're the ones who wanted better seasonal events, so we were doing that but you're still not happy, so we'll stop them!"
Why is it one or the other? Why's it difficult to have a average-good seasonal event (not just some cash grab, but a 5min quest would be wonderful), as well as monthly updates?
The new matriarch has been discussed for months now. Why wasn't it and the archaeology site not active in development?
Genuinely worrying as that would have implied that after the summer event, there still wouldn't have been content after June...