I'm pretty sure I'm not alone in having a bias against the name "CockroachDB" and being okay with people who don't have their shirt tucked in. I get the comparison you're making, but "untucked shirt" connotes "casual" to me. Roaches connote "health hazard." I'm okay with eating at casual restaurants, but not casual restaurants with roaches.

If you have to explain "we want you to think about survivability, not health violations," then maybe the problem isn't your untucked shirt--it's the big grease stain covering its front. You can insist that's just part of your style all you want, but it's going to be a hard sell.