I knew that flickr has been on the decline for a while. IMHO, Yahoo’s acquisition was the beginning of the end. SmugMug’s heavy handed idiocy of late was the last straw for me.
After a few arrogant email demands from SmarmMug, I had had enough so I requested all of my data from flickr and it only took them a week and a half to provide the requested files. I happily downloaded my content and deleted my account after 13 years of use.