| | 17 | EDIT TO ADD: I, and I think others, are saying it should default to off on existing sites at the time up WP upgrade. However, that it should default to on on new installs. I'd even say the upgrade ought to prompt users to turn it on like we did for enabling Gutenberg at first. However, that need is in part based on HOW it interacts with existing images should regenerate thumbnails be run by a user or a plugin. That's the core of that concern, is does this have the potential to generate webp sidecars for millions of existing images, sidecar thumbnails that won't actually be used since those old images were inserted into the classic editor. |