The marketplace of ideas is a nobel and ideal state. However, its weakness shows in a low trust culture - those like Kendi will exploit it to initially be heard then discard it once they’re in power.

Without strict controls over who is and isn’t allowed in our culture we’re left with a “at your feet or at your throat” predicament. Subversive individuals are death to a culture (the thing Popper was referring to in the paradox of tolerance - you have to draw the line at life or death, not simply because you disagree). Trust is everything.