Is being FullStack not respected ?

FullStack is as good a specialist role as Frontend and SRE, and certainly more respected than those. But of course your node based backend may not be sufficient. And where is DB? FullStack means you can take care of end-to-end of a web-application (may be not only web, but mostly web), and that is certainly more respected than any of more focussed role like frontend, sre etc
And I don’t think there is concern of which one is being better paid, it pays enough. Besides, by being versatile, it also gives enough opportunities in other connected areas, like you can shift to AI/ML area seamlessly in your organisation without facing much trouble. There is no concern about how well it pays. It is more about your interest.

It’s respected, though more in startup. You can give interview in either of the focused roles and grow specifically in that if you want.

We respect specialist in most fields, for us full stack is no stack.