By this point, Wikipedians have collectively spent hours on the specific article Sullivan's in an uproar about. Many of the volunteers he's addressing have spent years getting good at what they do. And they've collectively spent decades of effort figuring out how best to decide which articles are worth keeping and which aren't. And then documenting that in a fair bit of detail.
If Sullivan wants to tell Wikipedians they're all stupid and wrong, the least he could do is spend enough time to understand whether he has something approaching a point.
By this point, Wikipedians have collectively spent hours on the specific article Sullivan's in an uproar about. Many of the volunteers he's addressing have spent years getting good at what they do. And they've collectively spent decades of effort figuring out how best to decide which articles are worth keeping and which aren't. And then documenting that in a fair bit of detail.
If Sullivan wants to tell Wikipedians they're all stupid and wrong, the least he could do is spend enough time to understand whether he has something approaching a point.