The physical threat? No.
But there is a credible threat here. No theater wants to go through what Sony is going through right now. And no sensible one believes that they are going to be able to protect themselves from it.
Sure, the North Koreans hate the film, but why do these cinema companies give half a shit? They weren't going to get North Korean ticket sales regardless of the movies content.
Yes, absolutely.
I don't share the ideas, but they certainly aren't rare.
I roundly reject the speech of shitty people. (I've switched tabletop game stores because I have no patience for GamerGate partisans, for example.) While I don't agree with the notion that this movie is deserving of rejection, I sympathize and anybody who feels that way is not somehow wrong by refusing to accept and patronize it.
These are fringe beliefs. As a general rule, movie studios do not shitcan movies just because a couple of dumbasses think that the movie goes too far.
Seriously, if Harry Potter was released despite the controversy it caused, there is no way in hell that "controversy" around The Interview is the reason behind this decision. You'd have to be incredibly out of touch with American society to think otherwise.
Looking at the audience section, with 27k entries, 96% wanting to see it and a 3.8/5 score pre-release, it's clear that it wouldn't have been a flop.
For example, the (also Seth Rogan / James Franco) film Pineapple Express: http://www.rottentomatoes.com/m/pineapple_express/
58% rating from "Top Critics". 73% rating from audiences.
The idea that Sony is using the DPRK as an excuse to shitcan this movie because of mediocre critic ratings is flat out absurd.
Step Brothers, 55% on RT, box office of 100M.
Shrek the Third, 40%, 320M.
Anchorman got 66%, 84M at the office and a major cult following.
Hell, You Me and Dupree had an atrocious 21% and had 75M.
That's just looking at Seth Rogen's filmography. There's a million more examples of comedies with low ratings that either resulted in high box office results or a major cult following.
People don't watch comedies to see oscar-winning performances, they watch comedies to laugh. 50% isn't that bad.