Who knows. If you replace they have AIDS, back to their huts, with they're rapists, grap them by the *****, disrespecting POW's, I don't like those that were captured, mocking disabled people etc. you probably wouldn't believe it either if it was just some source. But this is stuff he was very comfortable saying in public, with a mic on. Just imagine what he says in private. So it's very possible he said these things.
And here we are on Christmas Eve day and the President is retweeting stuff like, with CNN on the bottom of his shoes, going after FBI's McCabe again -
https://twitter.com/realDonaldTrump
2017 was a love tap
2018 will be even rougher for him. Continuing to make more enemies. Keep going after the media, your own intelligence agencies, see how that works out for him.