2. Non-default fonts for text still create a suboptimal experience for users with reading impairments like dyslexia who could benefit from using their preferred fonts in place of sans/serif without breaking pages that need icon fonts.
> Just because you don't like it doesn't mean the rest of the world should suffer without it.
By the same token, just because your design/marketing departments think a design "pops" doesn't mean that disadvantaged users should have to suffer by your personal preferences. People who need privacy (e.g tor users who disable js/JIT/SVG/any non-whitelisted fonts), extra a11y (changing default colors, fonts, layouts), and extra bandwidth constraints (satellite internet with high packet loss) exist too, and excessive web design frequently gets these people shafted.
I'm not saying that the world needs to change for my personal preferences; I'm saying that the world needs to cater less to personal preferences and more towards people's needs. People who make up a disadvantaged minority of users need disproportionate levels of accommodation, and their needs are more important than graphic design.