On a surface level I also agree with plenty of the aims and talking points of BLM. Problem is that the second you get past that surface level veneer of 'Black Lives Matter and we need to look at the policing of black people' you not only enter the territory of insane cultists but also some of the most vehemently racist and vitriolic people on the planet. That's not even taking into account the complete hijacking of the movement and it's use as a blunt weapon for a thousand purposes other than reasonable (a term they seem to have put by the wayside) police reform.
It's also not really much of a surprise that a zoomer agrees with some BLM shit, assuming you don't think that Kyle is just lying through his teeth in order to at least try and salvage his reputation with half the population. If a PR person is telling him to say that though I'd probably fire them, seems shitty fucking advice in this climate. Fuck all on the left are going to change their opinions of you and plenty on the right are going to be arsemad over it. Although maybe the purpose is actually to stop the far/fringe right from turning him into some communist killing symbol and to stop trying to associate themsleves with him

. Clearly this is the type of thing to make people like Ralph stop trying to thumb that teen taint, so it obviously works.