You bring up a valid point about using ANY non standard hitch
If the TT needs to be moved by another vehicle for any reason, be it service or a roadside breakdown.... You may find it diffcult to get it done.
My TV has a 2.5 receiver... But I stayed with the 2" drawbar, because 1. it is rated the same as the 2.5", and 2. if I need to move it with another TV, it can be done much easier.
In my case,(as in most peoples) there is zero benefit of the 2.5 bar, and some downsides.
BTW. The reason the 2.5 bars are not generally rated higher is that the entire bar is not 2.5..... The drop/rise portion is 2". That is the limiting factor.
