Then be more careful about using "you," because it's easily confused with a direct pronoun.
You can't just pretend those two years never happened
"Nobody should pretend those two years never happened"
"They can't fool us that those two years never happened"
"We all saw what happened to children over those two years"
There are limitless ways to convey the point without sounding like you're accusing the parent post, and because you've got a bit of a reputation of "I told you guys!" it's not unreasonable for someone to take it as a personal attack. Generally, one should avoid the use of the rhetorical "you" unless the meaning is perfectly clear.
"...beginning to..."
It's been crumbling for decades
Fair enough. Comment removed.
TL;DR - grammar Nazi
Then be more careful about using "you," because it's easily confused with a direct pronoun.
"Nobody should pretend those two years never happened"
"They can't fool us that those two years never happened"
"We all saw what happened to children over those two years"
There are limitless ways to convey the point without sounding like you're accusing the parent post, and because you've got a bit of a reputation of "I told you guys!" it's not unreasonable for someone to take it as a personal attack. Generally, one should avoid the use of the rhetorical "you" unless the meaning is perfectly clear.