Most stupid service that ever became dominant. Blogs were so much better (no, not Medium).
User interface is horrendeous.
Reallly cool information presented in an unreadable manner, see e.g. this great thread on palletts.
Centralisation is bad.
Official communication by ministries, politicans, companies etc on a private platform.
Outrage machine, no serious discussions.
It’s not a place were “everybody” gets a voice, but a few stars drown out the rest. For most of these stars it’s also not a place for discussion but a place to shout their message non-stop.