It seems the norm these days for people to react negatively to any change in extreme a manner as possible making absolute sure to emphasize how terrible a descision it is and how they'll take their patronage elsewhere (particularly rich when most of us are leechers enjoying technically pirated work).
For anyone with sanity left, you might be upset at losing an option but it's not like the change was made for no reason or reasons only having to do with the legacy reader. And you can still read your stuff. It's just different ...and in your case maybe somewhat less convenient. By all means if it's not good enough for your freeloader fix of flicking through manga like candy, go elsewhere. It's not like this model is sustainable in the long run, but you are free to oppose efforts to maintain it as well as support other practices that serve to eventually kill it off faster.
@fullerhorn You need a full report? Will that even make you feel better if you nee the exact intricate reason? I highly doubt it. You're still going to say other sites have "better" experiences. By all means go, most of these sites can provide better experiences because their user count is lower, they compress images, and aren't suffering as much crawling as MD does.
I'll say it because I find it unlikely the admins will be as harsh...just get out. If you're fixated on your own precious special experience, you're not looking for "answers", at least none that can be reasonably given.