my interpretation of the back and forth:
Q posts link to an Obama foundation tweet that shows Floyd's picture, with a timestamp prior to Floyd's death (May 25th vs May 17th).
Anon indicates that the tweet scrapes the meta data from the source website, not twitter, trying to call Q out.
Q responds to anon indicating that the meta data is cached, and would require a flush to clean it.
Q recognizes that this would require too much explanation and derails the intention of the post, providing his post "not all posts are meant for Anons".
In other words, when Obama.org was first posted, Twitter cached the data (assume from the May 17th post). When Obama.org was posted subsequently on May 31st, it would have required someone on Twitter side to manually flush it, otherwise it would have shown something different than expected when it was linked.
So either:
1) Someone on twitter side is working hand in hand with ObamaFoundation (and other DNC operatives) to ensure that communication & optics are closely controlled, or
2) It was indeed posted on May 17th with the original image in preparation for what was known to be coming.
I'm leaning towards 1, but Q's point is that either 1 or 2 are damning, and target is 'normies', not Anons.