I agree. This would greatly frustrate users on quick-feed news sites and social media who are hoping to find that article or post they were just reading to find it now gone because the sites algorithm marked it as 'read'.
I have this problem all the time on YouTube. I'll instinctively click through to subscriptions but when that is loading I'll notice a recommended video that looks interesting. But then hitting back it's gone because YouTube has reshuffled the recommendations