Nothing against sport MA and I cant add much to this discussion but old school, pre-Olympic, non-sport TKD, as I trained it, had close in fight training and some simple locks
But "old school, pre-Olympic non-sport TKD" also had no steps, a weak or no sparring stance (generally with weight backward), flippy kicks that snapped at the knee only, and non-contact punches similar to karate "sport" punches. But against a non-moving target (like a stack of roofing tiles), some could generate tremendous power.