>>/5659/
Actually based. I've had similar ideas about boilerplate thread titles (such as those found in >>/5662/)
originating due to selection pressures, but your more general thesis resonated with me.
A thought: trite, (you)-provoking titles only seem to exist in fast boards - /a/, /tv/ and /v/ especially. Only in these hotbeds of activity is the selective pressure great enough for these memes to form. Think hydrothermal vents, or stagnant pools seething with amino acids and boiling in unfiltered sunlight.
And for any lurkers reading this who find the idea of a noticeablr dopamine hit from (You)s unbelievable: it's real. The desire for acknowledgement, validation, recognition - all powerful motivators, especially to those starving for attention. Knowing that someone cares about what you think - that it hurt them, helped them, made them think or laugh or masturbate or rage - is a rush, even filtered through anomymity and a million miles of fibre optic.