You are part of the vocal, online minority that doesn't look at Mint and cringe because it looks so amateur and dated.I have used macOS for 10 years[1] and I always had the same feeling about Windows 7. The icons looked ugly, apps were all over the place UI-wise. The directory structure is impenetrable for a non-expert. Etc. With Windows 8 and 10 things are even worse, discoverability is hard in the super-flat new interface, Win32 applications or universal apps look out of place (depending which one you like), and even for Windows' own settings, things are scattered between Win32 and universal applications.
The Windows UI mess doesn't drive Windows users away, so I do not see why some misaligned icons or text would drive users away from e.g. Mint. There are other reasons why people do not use Linux, but I don't think this is it (outside some niche groups, such as designers). Death by a thousand paper cuts is why most people will stop using Linux after trying.
[1] Though I am now using Linux again the majority of my time.