Steemit should add an option in Steemit.com settings saying "Use canonical links" (and explaining what they are). By default it should be... hmm, checked or unchecked? Most steemians won't care and those who do will find the option and set it as they think is right for them. Probably.
By the way, Busy team remarked this a while ago and have a "rewrite links" option in their settings, to rewrite post links from steemit.com to busy.org. Haven't tried it.
most people wont care, you are right, but if we are to try and attract serious bloggers and content creators, then we gotta have better options. a discussion has now been had so I am hopefull we will see action and changes. i was the first to give out, I will be the first to let everyone know when the problem is resolved too