Just to be clear, I am not suggesting using pagespeed for anything 
I am saying we should not get complacent or lazy and not optimize CSS and JS files by combining, minifying and gzipping just because of HTTP/2.
Yes, developers should provide minified versions for their themes and plugins. Absolutely. Then we should combine them, place them appropriately in header or footer, defer or async the javascript appropriately etc.
I completely agree with you that we should not spend time on the pagespeed module.
