Why relevant, you ask.
Short answer: "No, it doesn't have to be relevant. It also can have no future".
Every time I hear this kind of argument I remember the steam locomotive races, popular at the early XIXth century. They don't race anymore...
Either racing moves or is left behind. Actually, I can imagine that in a couple of decades we'll see the first rocket races and that, by the end of the XXIth century, fossil fuels cars will be only in museums, along steam propulsed vehicles.
Long answer:
Three reasons I can think of:
1.
The Code of Ethics, First Canon: "Engineers shall hold paramount the safety, health and welfare of the public and shall strive to
comply with the principles of sustainable development in the performance of their professional duties."
Of course, I can cite Barbossa in The Pirates of the Caribbean: "... the code is more what you'd call "guidelines" than actual rules."
"Welcome aboard the Black Pearl, Miss Turner."
2.
The Policy Center:
"Hereby decides:
23. To continue its longstanding support for the global effort to reduce toxic emissions, to combat dangerous climate, change to promote automotive fuel economy and
responsible motoring"
The most important voice that I think you should read (sigh) is this:
3.
The Motorsport Industry Association:
"At the outset, there was some doubt that the original mission statement of finding “
A new motor racing formula that would promote the use of improved automotive environmental technologies, in a way that is as exciting and no less fast than other formulae, using limitations placed on energy.” was a realistic objective, but the working group of industry professionals and academics quickly established that
motorsport did have a contribution to make."
Finally, there is a thread you might like to check here:
What should Formula One do to go green? Express your thought
So, Gary must be realizing that the greenies already won. Too late, Gary.