In all honesty, we all have our preferences for sleeping....pillow choice, tight sheets or loose sheets, pj's or no pj's...at the end of the day we all choose to sleep how we are most comfortable....so why do we try and 'train' a baby to sleep a certain way (excluding SIDS guidelines of course)? Even if you end up with a 5 year old being wrapped to sleep (and you won't!) so what? It's not hurting anyone to do so...so just go with it, don't stress over it and be happy that the simple act of wrapping allows your baby to have longer stretches of sleep at night!
Sometimes I think we're own worst enemies with our ideals as to how our babies should sleep....but I can tell you now that I don't worry at all that my primary school aged kids all having different sleeping preferences