It's not an existential threat, presently. It really depends how long the trend can continue. People telling you that its a fad that can't last forever are consistently vague about when it will end and what length of time would be enough to worry them.

A period of months and then a fizzle is a lot different than a period of years, where passions can continue to smoulder. Given enough time, well-intentioned people can be manipulated by ignorant or malicious people into advocating for hasty code changes or a fork war.