Sort of. That just means they endorse an Agile approach - ship bare minimum features early, and continuously improve. Not ship bare minimum features early, and who cares about how its designed. The whole over-engineering argument is a straw man, because over-engineering is just as bad as under-engineering. Neither one is desirable in professionally written software.

A lot of the time once you have a good understanding of some of some more mature practices it doesn't take any longer to do the 'right' thing.

I felt the same about the YC ecosystem, which is why I submitted this.