> There must be millions of devs who might be interested in a podcast that teaches them about better development practices

Sure, but just hearing/reading "Devs chatting about development" doesn't convince me that the outcome is I'll know about better development practices.

Sure, but that’s a problem with the marketing, not the niche being too tight.

The official tagline of the podcast is:

> A podcast where folks talk about running small & large web apps in production. Topics include tech stacks, lessons learned and DevOps / deployment tips.

This is at the top of the page.