Any individual sport where only one athlete per nation can compete in an event is terrible, indeed
I kind of understand it when the entire field of participants is only 16 athletes (which is of course not the case in swimming for example), but then the solution would be to simply have a more grown up tournament instead of only 16 participants...but then we get to the athlete limit which apparently can't be touched.
It's all not great, of course we all want to see at least the entire world's top-15 or so compete....are there many countries with multiple athletes in the top-15 in taekwondo? I would assume South Korea and Iran, but that's really not more than a guess
Edit: oh wait, it's not even '1 athlete per weight class', but 'X athletes in total, where X is lower than the number of weight classes'?