Last year, I wrote about how YouTube is a pretty great herald of what we can expect to happen to coding. YouTube launching in 2005 didn't seem to fill an obvious content gap, and yet two decades later it's a $550bn business that's more culturally relevant than traditional TV. We're now seeing the same long-tail creation wave for software. If you've been on X the past few weeks, you've seen it happening: Tobi built a custom MRI dashboard that (according to the professionals) should’ve required…