It doesn't make his point stronger because his company is already comparatively huge if you look at most startups who supposedly fall prey to the "growth at all

It doesn't make his point stronger because his company is already comparatively huge if you look at most startups who supposedly fall prey to the "growth at all costs" mentality. His point is moot because a lot of startups will agree with him when they reach the scale of Basecamp. They're not there yet, so they need to think about growth. Meanwhile, companies who are huge and going after more growth don't give a fuck about what DHH writes. It feels like there's a pretty significant message/audience mismatch.