I am from Kazakhstan. If you've ever heard of it, would you consider it to be an autocratic state? Because according to the official results our beloved leader received 98% of votes in an election a few years back. Now that's an unrealistic number for sure.
https://www.alux.com/wp-content/uploads/2015/06/25-insane-cr...
You are assuming someone has an overview of the rigging being done. It's probably more chaotic than that. If 1000 different people are chucking opponents' votes into furnaces, how do you coordinate hitting that number?
He would if he wanted his quiet dissidents to feel isolated and his loud ones to be that much easier to find.
It's not that much different than other leaders declaring there are no gay people in their country.
That part is pretty well established by now.
Coincidentally, he established again a level of support a couple percentage points above Putin, who received "just" 78% last election.
I think he did rig elections but he might have had majority already, which makes his numbers look so unrealistic or he is just plain stupid to not even rig elections to make them look believable.
I do really sympathize with the Belarussian people though, every community should get a say on who represents them.