I vote "yes."
But this isn't something you can really measure with a vote.
It's not that 70% of the people here find it hard to read. It's just a simple question of why not make it easier to read for everyone, especially those who might be older, have less-than-perfect vision, or, like myself, simply prefer something easier on the eyes.
Not too many people are going to join a forum because the text "looks cool" but if they can't read it easily they will stay away.
It's also true that the people who have the most trouble with the grey-on-grey text just aren't here anymore to vote.