MaterializeCSS old maintainers abuse backers?

Seems like the project was forked to an org: https://github.com/materializecss/materialize

But original maintainers still being backed for over 2 years: https://www.patreon.com/materialize

Would love to know, if anyone knows the insides, if this is something to be reported, I just feel bad for the people backing this and are unaware of the project status.