They just assume that 3rd party shouldn't ever have a need to send "http://" http://" link only to redirect to "https://" https://" and are willing to stop that

They just assume that 3rd party shouldn't ever have a need to send "http://" http://" link only to redirect to "https://" https://" and are willing to stop that feature from working even if it can lead to false positives and just break some sites.