@gwidion I don't know what is the default in your instance (or how it is configured in your account), but you can configure how you want to show media content (sensitive or not), blurring or not in your appearance settings page (probably you will find it in your instance at https://floss.social/settings/preferences/appearance)
why does mastodon shows most images blurred by default, requiring a click? Can this be set so that I see all images by default, before seeing a spoiled version?
(for certain types of images this seriously impact how they are perceived)