How do you know that? or rather presume that?
Trump was less “abrasive” in 2020 than in 2016. So your alleged voters don’t have that excuse. And Democrats have said things that are several orders of magnitude worse.
At least they did/do not exist in sufficient numbers to make the steal “unnecessary”.
Mainstream media controlled the narrative. Hostility turned off some “independent” voters. Was it fair? No. Trump should had realized that and not have taken bait. I’m sure his advisors warned him about it. He didn’t listen. His instincts led him to victory 1st time around right? A lot of it was luck. His opponent was Hillary. America hated Hillary. So what Trump should have done is to Instead pull a Reagan on his way to 2nd term victory. Morning in America campaign compared to Biden’s nightmare in America. That would have helped him to win the reelection. Maybe. That’s just my post election analysis.