X is nearly identical now to what it was before, except more people complaining that it's different. If the landscape of your social network there has changed, seriously question what type of community you're building / a part of, because it doesn't reflect reality (most don't).

But, my community is almost entirely general business, SaaS, and developers - I've noticed no discernible drop in quality or quantity. If you follow a lot of journalists, politicians, etc. yeah your experience is going to be a lot worse.