I'm well aware that Gigabit on GPON basically can only support 2 customers per PON at maximum speed, my point was more that something which is supposed to make things easier for the customer, isn't really. Because an average metric across DOCSIS, ADSL, VDSL, GPON, potentially bottleneck in completely different ways. DSL being a particularly problematic one, due to line length/quality being the biggest limitation.
I'm really just saying what you have, there is no easy fix for advertising. I just think the current system is still rather flawed, what with not even covering upload speeds at all.
Plus as you say, there is huge problem with not explaining to customers that with the faster connections, you simply CAN'T hit the peak speeds in most use cases. Thus why I'm constantly correcting people on forums about the fact not hitting Gigabit on your speedtest doesn't mean a damn thing.