It wasn't dissidents in Hungary, it was the government, and there wasn't really a revolution there, they opened the border to Austria which was a monumental event in the fall of the soviet block, but the Russians pretty much left on their own.
And more importantly, I really think that bringing flattering quotes from random people in eastern Europe at Reagan memorials it's not the best way to assess his contribution to the fall of the soviet block.
Not true.
Carter had to ramp up his anti-soviet rhetoric leading up to the '80 election, but it was mostly as a reaction to Reagan and his merry band of
chicken littles.
Carter signed SALT II and didn't withdraw for it even after Afghanistan, it was Reagan who unilaterally broke that treaty (and we know now it was because of some baseless bullshit).
Honestly, it's weird to even see that point being argued, that was the main thing Reagan campaigned on in '80, you know "detente is what the farmer has with the turkey before thanksgiving" and all that jazz.
Sure, in retrospect the idea that the USSR was secretly preparing for a surprise attack against the US in the 80s is silly, but pretending the Reagan didn't believe in it and campaign on it is even sillier.