"Do We Favor New Over Old?" Topic

We do, but probably less than miniature wargamers generally. It's a matter of sub-types.
A lot of the Old Schoolers have been working in the same period, scale and rules for decades.
At the other extreme, you can go down to the local and watch the GW/FOW crowd dutifully paying for the new edition of their rules and buying castings to rebuild armies accordingly at regular intervals. I find it a bit depressing, myself.
In between, you've got the "regular" historical miniatures players who have favorite periods but get distracted by new books or figure lines--and the SF/fantasy gamers, who still have large piles of lead from discontinued fantasy lines and pirates dropped when they all moved in lockstep to zombies. (Has anyone told them what's next after zombies, by the way? I don't seem to be on the distribution list.)

How much a population of wargamers favors new over old or the other way around depends on the mix of those four types.

Depends on what you mean by "new"

It seems that new rulesets get tossed to and fro for a while, but once they have attracted a certain community of gamers they get pretty good press

In some ways maybe but on a recent poll The Sword and the Flame still came out as a top game so some of the old is still important.

The advertisers would like us to favor the new, and since it's always on the front page it may seem that way. I play a lot of stuff, new and old, and occasionally the new catches on with us.