Well, that part is simple: 'security features' is a nice way of saying 'your rights as an administrator are restricted'. In other words, it is not the security of the end user, but rather some major corporation. And it is not even even real security.. it is financial security. It is not that just that it is impractical; that is not even a consideration here: it is dumb for me to artificially restrict myself from being able to do things as I see fit on my machine.
<< I think we might be having a case of a bubble here. I suggest looking into Steam survey results. Also, you said "most" people not "lots" so you're now backpedaling on your claim.
Eh, I am on those Steam charts and I am shown as Windows 7 user for some games. Do you really think those are that accurate to begin with?
<< You still don't have to switch your kernels or install the AC by simply not choosing to install the game if you think them not trusting random kernels to be free of cheats is unreasonable of them.
Or, alternatively, ostracize anyone who would consider shilling, installing, or even maintaining this unholy abomination.