I think that it is not necessary to go in cycles only on the most famous exchanges, because even we who are not famous can offer quite good conditions for traders. In addition, a lot of negativity is caused by those trading platforms that force users to provide their personal data. I think that this also greatly influences the positive opinion regarding this or that stock exchange.

at this time I have never traded with Poloniex, indeed there have been several complaints about this exchanger, even though I have never experienced it directly. but I am more careful in choosing a better exchanger now, binance is the best choice at the moment.