If you're in the west, KGB backdoors are less of a risk to you.
Say you're in the west. NSA has backdoors into your US-designed hardware and your US-designed OS. NSA also, probably, has access to your ISP's routers and
US net/web corporations like Google. As a result, NSA may hide C&C channels where KGB use of a backdoor to your hardware would still show detectable illegitimate network traffic.
Lower risk of detection translates to higher probability of use.
For people that want to swap KGB surveillance over NSA's.
FTFY