I had just assumed. My rage has now subsided.
Mh, why did it turn the pictures into potato-quality like that? The original was much higher rez:
Test to embed the picture with foreign URL:
URL of original: https:[SLASH][SLASH]i.imgur.com/qjZvB3t.png
We must have some proxy config that processing them into a potato. I'll put it up as a gh issue.