Well, it is a big deal but it's not quite true that no one talks about.
Binance added STEEM on its exchange on February 1, 2018, and there were many posts about it including mine which was published few days later after it happens, and it was quite in depth.
So, for some reason, the event apparently skipped from your attention at the time when it happened, but that doesn't mean it passes unnoticed by the whole Steemit community.