He explained, on the latest UK show on Sunday night, how he feels about Porsche and he doesn't hate them, he just doesn't "get it". Nothing more complicated than that really.
Here's the clip. The Porsche bit is during the interview with JK about 8 minutes in, almost at the end. If you don't want to find out where the blue car Hammond is driving ends up on the lap time board don't watch the first bit...