If you do that you're stuck with round trip times all the way down the dependency tree. HTTP/2 reduces the overhead of that, but doesn't eliminate it, so now you've added a bunch of loading time to your site.
I don't see a counterargument here. "It's fast" doesn't change the fact that using 'native' imports instead of bundles means you're still adding the round trip time for the browser to request each set of dependencies all the way down the dependency tree.
