It's not a timely reversal, and I doubt it is sincere.
Beck is like 50/50. I like some of his show, and have had to turn off others. But as others have stated, he has some issues (not the least is he is a recovering alcoholic and bit of a drama queen). I have had to tune out others as well. Levin has tried me at times, Savage many other times, Hannity more than I can count, but usually those more for their style than the content. Rush is about the only one I cant recall having had at least one stupid day.
No I believe it is sincere.
His concern with Trump going into 2016 was Trump’s apparently convenient turn to the right on issues like abortion, personal religious conviction, etc. He was not a never-Trumper, but he was very cautious of what we had in a candidate.
Over the past 3-1/2 years Trump has shown everyone (Beck as well) that under the Democratic onslaught he’s proven that he is made of sterner stuff than most any of us. And Beck and the Blaze team are generally in agreement and have been steadily awed and supportive of the President (as a person and his office) that they previously doubted.
There is no doubt that Trump has risen way beyond almost everyone’s expectations. He does not appear to have a true conservative core, but rather a personal core and generally good conservative advice. Unfortunately his embracing massive spending in response to the government shutdown should still be of concern to conservatives.