"Ugly architecture" is subjective. A lot of architects care very much, but they follow the academic line and lack the imagination and empathy to understand why elements of that aesthetic are unpopular and impractical - a completely different problem, even if it causes related outcomes.
Bugs are easy to write and hard to fix. MBA culture as a whole is fixated on quick extractive shareholder returns, not on celebrating supreme engineering quality. MBAs care very much too, but not about the things the author (and probably most of us) care about.
Some people do care but are simply not good at their jobs.
Even if you do care, people will assume you don't. Anyone who's done direct customer facing work or even just sold stuff online will know that people love to nitpick.
And so on.
The problem is narcissism vs empathy. Caring means trying to have some insight the experience of others. Narcissism is on a scale from blank unawareness of others to outright hostility, whether overt or covert.
There's a lot more of the latter than the former around at the moment, and corporate and economic values provide some conveniently expedient justifications for it.