Non tech cofounders that are getting 30 users before trying to find a technical cofounder aren't having trouble finding tech cofounders. Non tech cofounders that have 10 people committed to paying up to 1000/mo and signed letters of intent from the 5 of them (120k/year, 60k guaranteed) before building a product are few and far between.
These guys are gems, and betting on them is a good bet. Its like non-tech founders trying to partner with proven Facebook employee #13. Unless you're equally proven as a dev, its hard to justify asking for that level of accomplishment from your cofounder.
Much of the "find a cofounder" game is about making good decisions when its not such an obvious call.