This isn't really the lean process though

That's a bit of a "no true scotsman", isn't it?

Certainly it must be true that encouraging people to belt out a "minimum viable product" results in the launch of something half-baked and unviable at least slightly more often than if the advice hadn't been taken. That doesn't invalidate the lean startup concept, it just illustrates a potential tradeoff... and there's always a tradeoff.