I used to spoof my user-agent and don't remember much of a difference... As a dev, everyone tells me I should just throw literally every possible version of new

I used to spoof my user-agent and don't remember much of a difference... As a dev, everyone tells me I should just throw literally every possible version of newer attributes into the CSS anyhow, so on most websites you're bound to get at least some of the right ones. Perhaps your complaint is of a higher order though? Recently I've been spending most of my time wrestling with CSS so my perspective is a bit skewed...