Nolan, I'm not familiar with what you do or have done, but have you ever tried to make a website back in the day? Ever tried to support IE6? 7? 8? IE literally broke the web. CSS rules which worked in every browser ever wouldn't work in IE. Entire webpages weren't formatting correctly, having to spend hours, days, on workarounds. Comparing Safari to IE is just wrong. Safari doesn't break the web, it 'just' lacks supp…
The worst thing MS did with IE was implementing proprietary, and very aggressively protected, solutions to common problems. Developers, excited about the new features, rushed to support what they felt was the next generation of web technologies, only to get caught in Microsoft's trap. Once they held the marketshare majority, they stopped innovating.
Safari is nowhere close to a majority player in the market (not even on mobile). Thus, it could never be considered equivalent to the evils of IE.