The thing I find unfair?

Notice the fibre management speeds vs. the non-fibre management speeds. Surely if traffic management is designed to minimise traffic on the ISP network, then they have sufficient capacity, given that they have opened the fibre speeds to 10x the non-fibre speeds.

You would think that the one advantage to being on a non-fibre, non ADSL2/2+ connection would be decreased management, since there's far less potential bandwidth.

Not so.

I really cant understand the logic of this kind of traffic management when all there packages have download limits anyway.
Why introduce artificial network congestion to prevent network congestion?

It's to prevent the greedy downloader [censored] from stealing all the capacity.