And those fences had heavier poles and deep jump cups. The back rails of oxers nowadays are in breakaway cups, and many of the shows have nearly flat cups for the front rails. These fences fall easily. You can’t get a good rub or a flat jump to it.
I’d also say the TBs nowadays are not the horses of the 90s. They don’t move the same and they don’t jump the same. You can find a good one, but they are rare.