If you're using the Aurelia Materialize Bridge (AMB) with MaterializeCSS version 1 and want to upgrade to version 2, check out my blog for some tips. While it focuses on what I needed for Requestland and must not be a complete solution for you, it demonstrates that an upgrade is possible.
https://request.land/help/en/org/note/tiaiUfNgDs9z6GbCTSeWohqmLi3a

MaterializeCSS has transitioned to new developers and is evolving to incorporate the latest Material Design 3 (M3) guidelines. MaterializeCSS 2.1 and newer introduces features aligned with M3, such as rounded buttons, new color system, and dark mode.