Re: Register Bias
>>Most people would like the security fixes on their existing OS, instead of forced upgrade to newer more resource hungry OS. SO uses apple products, made conscious derision to be more at risk by not upgrading due to bad previous experience of once zippy device becoming too slow & useless to use effectively.<<
This is difficult to answer - because your second sentence barely makes any sense.
The first sentence uses emotive language like 'being forced'.
Apple users don't feel forced to upgrade iOS - they gladly do it for the improvements made.
Security fixes do come more frequently.