I see so many ideological arguments around "X is the new IE" that neglect one of the worst pieces of IE 6's reign of terror: the stagnation. Working around all of its quirks and non-standard behavior had an extremely long half-life; the venn diagram of things that worked correctly across all major browsers at the time was very complex and messy. Even with the release of IE7 it took many years for people to adopt it, and IE7 was hardly a saint either.

There's a part of my brain I'll never get back devoted to all of these workarounds. So many hours lost to weird corporate networks that had quirks mode enabled, different box models (before the advent of the `box-sizing` CSS attribute), random omissions of standards (no `:hover` on elements besides `a`), etc.