Third-wave comes with their own set of problems, as an aside. They definitely have not moved away from kinkshaming and sex-negativity.
That was also true of second- (and even first-)wave feminism, too.
> There's definitely a broader spectrum of opinions and that alone seems like a good development to me
Third- (and even fourth-)wave feminism may have some different and new ideas and means of presenting them, but much of the core diversity of approaches on feminism has really been around since the so-called “first-wave” in the split between what might (oversimplifying a multiaxis variation into a dichotomy based on some correlations among the axes) be seen as conservative/Christian/bourgeois/virtue-oriented feminism on one side and revolutionary/materialist/proletarian/egalitarian feminism on the other.