aside from the fact I think creeper just pulled a bogus speedtest image and implied its his own wishful connection speed which I highly doubt, not at all because he complains about how long it takes to upload to youtube which is no problem if he had that kinda upload speed, and not at all because the image shows last years date
also that was most likely respawn lag, and mojang derpy shit engine that doesn't know how to cache chunks after a respawn (even though same friggin area) so its always got to reload chunks and so player models sometimes appear below blocks to other players until they get the update. Something along those lines most likely anyway.