On the recent reddit thread some users were flummoxed by the recommendation to adopt and serve webp: https://www.reddit.com/r/webdev/comments/75w7t0/so_exactly_what_do_i_do_google_put_my_css_in_js/doatllq/

Indeed, it is only supported by 1 rendering engine. And unfortunately it's fairly difficult to pull off.

Given the difficulty and the reduced impact, we should consider removing the audit from the default. WDYT?