Chances are there will be - or, at least, Porsche appears to bet there will be - a sufficient number of well-heeled enthusiasts who prefer the sound, smell and vibration of an ICE to the quiet performance of an electric motor.
I am really curious to see how this pans out in a generation or two - I suspect nostalgia plays a significant role in the 'performance cars should have ICEs' mindset, so what happens when the generation who grew up on EVs enter middle age and have the disposable income for a performance car?
As for the rest of us, if, say, 1 in 1000 cars in a couple of decades' time burns fossil fuels, it is hardly going to be a nuisance. I'd be more worried (If I owned an ICE-powered vehicle) about the infrastructure needed to get the fossil fuels I needed in the tank.
(Glancing anxiously over at my 1949 S1 Land Rover (1.6l I4 petrol) and 1981 Land Cruiser 42 (3.4l I4 diesel) - neither of which are performance cars by any stretch of the imagination! The 3B engine in the Land Cruiser will merrily chug along on just about anything vaguely combustible you pour in the tank, though.)