Recent VAG, Ford and even Tesla developments actually counter this.
Skoda - mentioned Enyaq presentation and RS model version
VW - ID.R on Pikes Peak, Nordschleife, Goodwood, also announced there will be an R version of ID3
Ford - Mustang MachE 1300 hp version for publicity
Tesla with model 3 performance and recent track fever with Model S plaid
What seem to be the case is that companies don't want to be associated with fossil fuel motorsport, but they use electric motorsport.