Earlier quoted context omitted.
I also like the part of looking sharp, this is also a non-zero factor in any field, including IT. Between two professionals, if one looks sharp, clean and fit, while the other one does not, it is hard not to conclude one has also more self discipline.
This bias is a consequence of what Kahneman called “What You See Is All There Is.” It’s bad logic and ascribing signal when it’s actually projections of the observer. That isn’t to say there is no effect - people might start to see themselves as more disciplined if they look sharp. “Look good, play good”, as my coach used to say.
If a company can put energy into looking sharp while also staying in business, that proves some sort of viability/success of the business. There seem to be a few qualities you could have to achieve this, discipline being one of them. But, even if it's discipline that's being used to look sharp, that doesn't mean it transfers to the work the business produces -- all we know is that they're still in business and are successful enough to look sharp. For all we know they could use shady practices, under-deliver, know how to protect themselves contractually, and extract wealth from large inefficient organizations.