More like half of those that cast votes in the last Presidential Election cast votes for the sitting POTUS (well, technically a significant number less than half but that argument is pointless b/c of the electoral college).

It turns out that group represents less than 20% of the population (~63 million out of ~328 million is less than 20%).

If alienating them is an unintended byproduct of simply labeling a verbal invective that incites violence and provably presents lies to the detriment of public health might be a worthy venture in content moderation. The mere act of labeling outright lies and calls to violence as such really shouldn't be so controversial.