IIRC IE6 was considered a pretty nasty piece of work by discriminating minds at the time (e.g. more of embrace, extend, extinguish[1]), so no need to time travel.
Back in the days, IE6 was the best browser out there.
Whether it was a good browser or not doesn't change the fact that it was also a crafty attempt at manipulating web standards in such a way as to promote vendor lock-in for the entire web, which supports Offler's post.