Originally Posted by
Tziva
To be fair, up until his recent change, his passive healing was so weak that it was usually more useful to have speed on and then toggle to heals when amp was off of CD, and then swap back. The nonboosted heal wouldn't have saved anyone getting actively damaged anyway, while speed boost might have.
That's different now since his passive healing was buffed to compensate for the reduction in range and heal aura should usually be kept on and speed used situationally. But if you're counting the whole of your experience in the game with Lucios both pre and post patch... that's probably why you've seen so many of those. They weren't necessarily playing wrong.
(I've certainly seen some of those post-patch though, so I don't disbelieve your experience)