i don't think there's really anything wrong with allowing a UAE-based company to control security, nothing more wrong than allowing a brit company to do so anyway
if it were a saudi company i probably wouldn't be saying the same thing though...for the same reasons i wouldn't like a chinese company, or an indonesian company, or a sudanese company, i.e. these are regimes whose economies we should not be supporting. but the rationale of "they're arab, they must be bad" is exactly the kind of mentality that is just straight up gonna lead to a war; *us* versus *them*.