Well, free speech is also for calling them a bunch of whiny idiots who can't accept the results of a free and fair election.
And? Who said it's not? Have you ever posted without making some strawman? Ever?
And calling people who support them hypocrites if they acted like Trump was undermining democracy by questioning election results and feared Trump supporters would take to the streets if he lost back when they thought they were going to win.
Bull. Shit. Trump was saying if he didn't win, he might not accept it, offering no qualifications.
I accept the election outcome as legitimate as in legal (even though I believe there was Republican state government voter suppression and there was heinously malicious intervention by Comey). Trump is legally the president. It doesn't mean I have to cheer him on. Obama may have to shake his hand and wish him well (because Obama is decent enough to follow the norms of our democracy that Trump trampled on his whole campaign and does not at all deserve such civil treatment), but I don't have to. I'm not supporting messages against the legitimacy of the election, I support letting him know we don't all support him or his stated goals.
This is especially priceless when there is no real comparison over acceptance of election legitimacy between Democrats response to any Republican win and Republicans efforts to delegitimatize Obama's presidency, which he won with a sizable margin, and not just through birtherism but through the idea that the election was stolen by voter fraud. HALF of Republicans believed at the time that the then defunct Acorn stole the 2012 election. Trump ridiculously complained about the electoral college in 2012 even! And the conspiracy theorizing including elected Republicans. It continues to this day. Not to mention the subsequent norm-violating obstructionism in Congress, which went so for that they wouldn't even have a hearing on a Supreme Court justice!
It's also especially rich when, considering the polls, Democrats should have much more cause to question the results. Trump and his followers were going to question it despite the polls. I accepted that the polls were wrong the night of the election.