The sample here is limited and skewed - a lot of EVs are leases. They're also relatively new onto the market, so you'd think the only people turning them in are those who are unhappy with them.
Out of 5,724 hybrids and EVs in the sample, how many do you think were EVs? Also note that 5,724 is less than the number of new units Tesla delivered in March alone: 5850.