I'm not saying it has to be particularly constructive. But you can describe how a policy is terrible without your comment becoming a personal combative mess.

Something like:

Yeah, users comprise the web, and Chrome doesn't listen to them. See the alert fiasco, among others. [side note: probably elaborate here, I don't know what alerts you're talking about even after a search]

The Chrome team created a "standards" documents for WebHID that was so bad that Mozilla engineers couldn't even understand it, and still went ahead with shipping.

Others "standards" have had serious issues pointed out, with other browsers refusing to implement them, and Chrome keeps shipping them by default.

Users and proper standards haven't mattered at any point.