Electric vehicles cost $4,058 on average to insure
$4k per what? Is that across the entirety of the category, which is top-heavy?
I can assure you that my Chevy Bolt costs a lot less than $4k/year to insure, and that includes full coverage and common claim caps. It's similar to my common ICE car before it.
I presume it's being heavily swayed by the expensive cars, such as Tesla, Rivian, Lucid, etc. I don't think your standard EV (GM, Hyundai, VW, etc) is going to be reasonably different over a comparable ICE model.
I really wish they had included the average insurance price for each model. They obviously had it, since that was the basis of the ranking, but they chose not to display it.