I don't think this argument holds up. You know people can value more than one thing right? What if you value using your time optimally while playing to achieve gearing goals but you ALSO value whatever advantages you perceive ground mounts bring to the game.
In your scenario I have to prioritize which one I value more and choose even though these could be vastly different aspects of gameplay. Hmmm now that sounds a lot like choosing between a covenant aesthetic I like and the abilities that I like/are optimal....