To be fair, it is "startup hackathon culture" to think like this.
If you build software that doesn't work, people get pissed off and yell at you on web-forums... but in the great scheme of things that's not a big deal.
The main downside is that once you leave software, startup culture becomes incredibly dangerous. If you build an airplane that "doesn't work", people die. If you build a train that "doesn't work", the train crashes into a building and people die. If you build a bridge that doesn't work... people die.
And of course, when it comes to Soylent... if you build a food process that can be infested with diseases, or leave out important dietary nutrition in a particular diet... people can die.
We have all this discussion talking about the diet side of things, but little discussion on the practicality of storage, or whether or not it needs to be refrigerated.