Bonxie_MCCC, I'm guessing you've also done the "gather requirements and submit an RFP" dance, yourself.
I agree with your analysis. Someone, somewhere made a conscious decision that this forum technology was the best fit for their purposes.
However, having done these dances a few times myself, I'm willing to allow a little room for... let's call it "error over malice." Some things, like sorting and page numbers, might have been such basic assumptions that no one thought to ask. I mean, honestly, when I was thinking about my minimum requirements for a new Sims forum, I never thought to say "threads need page numbers and chronological sorting." I just assumed those features would be so basic that of course the new forums would have them. (Which just goes to show I've been out of the corporate game for long enough to forget how things really work. 😄)