However, at the same time, any student who has criticism, insight, or objection to these elements has the equal right to express their views in detail.
that's kind of a bigger issue, though, and there are a lot of unstated assumptions tied up in this point -- for example, that critique/insight/objection can counter/remedy any potential harm in response, that the culture of such a classroom doesn't fundamentally perform a disservice to those in marginalized groups (which again is the point/value of trigger warnings -- creating an even playing field so that all are able to derive whatever from the material despite different obstacles, etc.)