This post was published 4 years 6 months 14 days ago. Therefore, it may well be out of date. Do not reply on the contents of this post being accurate. I picked this up from issue 185 of MacFormat.
In a response to complaints about Apple’s ‘Get A Mac’ campaign, the Advertising Standards Agency stated …
We understood that Macs that did not run Microsoft Windows contracted fewer viruses than PCs that ran Microsoft Windows and as a result they were less likely to crash or need restating.
Check out the full adjudication from ASA for more info.