Which is exactly what us who create content for a living are thinking of your post right now.
I've been a victim of content theft -- both work produced professionally and as a hobby -- and I take intellectual property seriously. Occasionally, I've had "work in progress" that I chose to share sparingly because I knew somebody would try to steal it. On other occasions, I've given my time freely to professional journalists and hobbyist researchers, providing unpublished snippets from research notes so that they had something extra to add to a story. You scratch my back and I'll scratch yours.
My criticism of Motor Sport's approach is that it is ham fisted. To the best of my knowledge, UK copyright law doesn't have explicit "fair use" provisions. It's considered reasonable to copy three pages from a magazine to share with a friend, but not to hand out copies to everyone at the local club. Schools and universities have an allowance to reprint small excerpts from academic journals, but that is an agreement with the payment collection agencies rather than law. If I choose to copy and paste a couple of paragraphs from Motor Sport's archive (or latest edition) for personal reference, it's the digital equivalent of photocopying a page and stuffing it in the filing cabinet.
I appreciate that Motor Sport has good content that will be stolen by content farms *1. Stolen content is harmful which is why search engines are tweaked to ignore content farms. Search operators take intellectual property theft seriously because it reduces their advertising income. The people who are most harmed by Javascript copy and paste measures are Motor Sport's customers, people like me who have taken out a subscription. And whilst I'm sceptical about the maxim "the customer is king", I think it's fair to gripe.
*1 See https://en.wikipedia...ki/Content_farm
The script which denies right-click mouse action to read another Motor Sport story is plain daft. Every other publisher prays that visitors will go to the home page and open up two or three interesting stories in new tabs or windows. The concept is often called stickiness, and for every story that is viewed, the publisher has the opportunity to promote more of their own stories and more adverts. Motor Sport magazine online is largely free of junk adverts, but if you click on one of the few it'll open some nonsense in a new window. But readers can't view a related article in the sidebar without exiting the page that they are on.