Bill and Ted's Bogus Journey

I had heard that this hadn't held up well. I probably hadn't seen it in 15 years, but I have 2 or 3 quotes from it in my regular rotation...

My 10 year old and I loved it! Just as enjoyable as the original. I have one friend in particular obsessed with the first film and absolutely detests the second. As an OT'er, I sort of understand it... but for the life of me I can't figure out what the differences betwixt the two are to illicit such a reaction.

Any help?