Fact-checking an opinion is not fact-checking anything; it's opinion.
Secondly, Twitter isn't exactly objective; they're biased to the core - they target conservatives on a daily basis; same goes for YouTube/Google/FaceBook.
EVERYONE has the right to voice their opinion, whether snowflakes like it or not.
Twitter needs the POTUS on their platform more than the POTUS needs Twitter.
It is incredible that certain people never call the POTUS a snowflake even though he has the thinnest skin of any president in United States history. In this story he is threatening blatant 1st amendment violations because a private company flagged his post.
Poor little POTUS finally faced a tiny consequence for his compulsive lying and it was too much for him to take.