Isn't that kind of thing a real red flag for the kind of talent you'd want to attract? If someone told me they'd built a GPU compute cluster for their phpbb based social club forum, I'd think they were an idiot and not want to work with them.
So you're thinking that kind of technical mark-missing is the startup equivalent of the typos and other glaring errors in email scams? They're to weed out the people smart enough to be a problem?
Absolutely. I'm running into this problem constantly in the front-end dev world. Most developers I talk to are way too eager to list off a million cool techs that they're familiar with, most of which are completely inappropriate for the job at hand.
If I'm interviewing a candidate, I'm not interested in which tools they know how to use. I'm interested in whether they understand the problem those tools solve and when to apply them. Over-engineering is problem #1 with the community at large in front-end dev at the moment and you'll go a long way as an engineering team if you make it your priority to defeat that mentality.