My philosophy teacher always uses memes in his presentations, but I know he doesn't create them himself 😂
He just searches them out on the internet (evidence:
1) he said he finds them online
2) they sometimes have an imgflip.com watermark, but sometimes they don't)
This certainly doesn't mean he isn't an Imgflip user, but it means he doesn't use it for the memes he shows in his presentations.