Totally, fair enough. It's specifically about the /hj tone indicator, how it is mostly useless because of its ambiguity and it not being known by people in general, and how that extends to most tone indicators. It's basically what you said but goes way more in depth (almost crazily so but that's sorta their thing)
Personally, I don't use tone indicators for pretty much the same reasons as what you said above. I also think that anything that could be conveyed using them is probably just better off being spelled out