It's odd how we all agree that Apple's relentless focus on quality - from the very first day when Woz spent all those hours creating beautiful internal hardware that no one every saw to today's Apple that frets about creating hi-fi prototypes with actual data and not lorem ipsum - is key to their success and yet we seldom invest resources in achieving that level of quality.
On the other hand, things work different in startup land. You need to make sure that they work you put in has actual value and doesn't steal time from other, high priority work. This sometimes means creating stuff that might not reflect our level of expertise or be align with our ideals.
Ultimately, you need to find a balance between these two extremes. A balance that you personally can live with because each end of the spectrum is equally valid. If you find that your core beliefs clash with the rest of your startup, maybe you should start looking for a startup that prioritizes design and user experience much more.