You'd be hard-pressed to find many Nostr builders not running some sort of related infrastructure, like a relay, Lightning node, web server, media server, database service, API, etc. There are concrete reasons for this, inherent to the nature of FOSS development and services, the people it attracts, and the value it adds.
So, the idea that we should all come here and build because we don't need to set up any infrastructure is unconvincing, and mildly upsetting. That only makes sense to people who aren't builders, and shows their indifference to those who build and provide all of this stuff. What in the world do you think we are building on? These are the sort of people who think that they can look up, at the sky, and see Google Cloud.
The argument should be that it is easier to set up the infrastructure, cheaper to run it, and simple to integrate with it.
Which is true. At the not-insignificant cost of working in a highly chaotic environment, where you are constantly lectured to by popular npubs who don't know how computers work.