Rails was originally created for, most intents and purposes, of building Basecamp and solving Basecamp problems. That's why Rails is good at building things

Rails was originally created for, most intents and purposes, of building Basecamp and solving Basecamp problems. That's why Rails is good at building things that are similar to Basecamp and adjacent use cases. Modern Rails has been adapted to modern standards and trends but is still a "basecamp framework", with some additions to also be a "hey.com framework". Basecamp is a small company, intentionally, so it makes sense that DHH is more of a "product guy", or at least has more of a product sense than your typically insulated enterprise engineer.