Nerds continue to fail to grasp the value of UI/UX. This has
always been why FOSS and similar solutions have failed to compete in the market in spite of being "free" and often technically superior.
UI/UX is everything. Apple became the most valuable company in history on the back of UI/UX alone. Their tech is decent but not that much better than anyone else's, but their stuff is at least marginally easier to use and that's worth more than the GDP of quite a few countries combined.
The importance of user experience is only growing as the world becomes more and more time poor and we move more and more into an "attention economy." Saving seconds counts. If it doesn't work instantly it's broken, period.
Here's two ways I can explain it:
(1) If you value your time at $100/hour and you have to spend one hour a month maintaining something "free," that free thing costs $100/month. That's fairly expensive. It only makes sense to do this if you have a lot of surplus time on your hands.
(2) If you have ten million users and make a UI/UX improvement that saves them one minute a month and you value their time at an average of $50/hour, you just created about $8.3 million in value since that's the value of the time you just saved.
A rule of thumb that I use is that every step required to do something halves adoption. So if you have a 10 step install process, only 1 out of 1024 people who look at your product will make it to trying it.
Every developer needs to have "user experience is everything" tattooed on their forehead.