The story is of course much more complicated, and from my recollection the events in Eastern Europe really got started with Solidarity in Poland sometime before.
But we also know that Reagan was the first US president who was determined to end the USSR, not "contain" it (compare to e.g. G. H. W. Bush's later Chicken Kiev speech), and we did all sorts of things to help bring that about, and this included parts of our civil society like our much more industrial and to the right back then unions.
The actual events resulting in the very quick fall were something of a surprise, we didn't expect that, especially how relatively peaceful it was. But it was something we'd strived to help bring about.
I recently read "Lies My Teacher Told Me" by J. Loewen [1], and it hits on just this, being the "heroification" of American leaders. I wouldn't doubt that this is what was the popular teaching in K-12 US.
[1] http://www.amazon.com/Lies-My-Teacher-Told-Everything/dp/074...
For starters, I don't think many Americans understand any details other than the anecdote that there was a wall in Germany, and it came down. Please, rest assured east Germans, we have done worse than steal your achievement- we don't give it any real thought anymore.
Americans glibly joke about the fear culture around communism from that time, but we have no awareness of the irony of our current fears of isis or Ebola.
Reagan's speech at the wall was iconic, but you really need to be over 35 to be aware of it.
There where only one or two important speeches, may be 3 if you count Kennedy in.
One of the most important was, when Willy Brand had its visit in East Germany. The only important visit by a western politician in East Germany. The other one, which was not really a speech, but very important, was the one by Genscher for the release of the people into West Germany after occupying the West German embassy in Praha, CZ.
It had to have been terribly embarrassing to Gorbachev to be called out like that, and it strongly cut against many of his and the USSR's themes, e.g. if it's so great, why do you need that wall keeping people inside of your socialist worker's paradise?
Getting back to the 1989 fall, something stayed the hands of the USSR, unlike Hungary in 1956 and Czechoslovakia in 1968. I believe it's impossible to make an honest case that Reagan had nothing to do with that.
By no means am I arguing that these words literally tore down a wall. But if anyone can argue that a speech can ever be important, this one was, at least for American culture.
So my point here is that this author is punching at a straw man. I don't know anyone who believes this speech itself contributed to the felling of the wall. It was an event in a much larger storyline that was bigger than the wall itself: the cold war.
Of course not counting those of us who note, as I noted in another posting in this sub-thread, that Reagan just happened to be the very first President who tried to end vs. "contain" the USSR. I.e. the difference between giving it a strong push into "the dustbin of history" as he put it, vs. "personally responsible".
You seem awfully defensive about this, given that I said nothing that indicates you are a member, or indeed that anyone in particular is a member until you asked. Are you that uncomfortable with the idea that there are crazy people in the world who hold some opinions similar to your own? That's true of all of us.
Based on my knowledge of the right, I did't know of any such "sect", your language explicitly said there's a specific group of "crazy people" with this set of beliefs. Except you can't identify any of them besides your father, and no one can claim complete clarity in viewing their parents.
Is this truly a belief held in the USA? As an east-german this seems equal parts baffling and insulting to me.
If so, i can only thank the author for correcting this belief in a quite public manner.