The thing is, the political climate is very toxic and the absence of anonymity can have a real impact for things that are basically wrong think.

Say for example I held the opinion that immigration threshold should be lower. No matter how many non-xenophobic justifications I can put on that opinion, my possibly on H1B colleagues can and would look up my opinion on your version of Twitter and it would have a real impact on my work life.

There is a reason why we hold voting in private, it's because when boiled down to its roots, there are principles that guide your opinions they are usually non -reconciliable with someone else's opinion and we preserve harmony by keeping everyone ignorant of their colleagues political opinions. It's not a bad system, but it's one that requires anonymity