I used to wonder that too. I think it's mostly because anyone can view memes on imgflip without being a member, but you have to be a member (and signed in) to upvote them. :)
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3 ups, 8y,
1 reply
Every time someone views it on the newest or hot pages seem to count too. You don't have to click into it.
The poster is also passive aggressively trolling the OP.