Hi,
I personally don’t like this coding style, when you mix styles and javascript, it just feel weird.
well, i said the same staff about jsx and now i’m a big fan 
Anyway, i do think css-moduls are really cool and can fit well in our ecosystem.
It will even make more sense when we will migrate to the file structure suggested by @amirfefer here:
so you will have
product/product.js
product/product.test.js
product/product.scss
product/productActions.js
product/productActions.test.js
product/productReducers.js
product/productReducers.test.js