Not exactly sure what 'bursting Rashy's bubble' means?
Its true that Rashfords' development as a player has plateaued somewhat, in particular since his injury and since his off the field activities have become national newsfeed. Commendable though these activities are, you can't help but wonder and especially because of the personal dimensions, are they a distraction at this time for Marcus from his 'day job'?
Watching him play is frustrating, he shows occasionally, like his goal against Brighton yesterday, that he can still be a potent goal scorer. Yet at times as Marcus seemingly hugs the left touchline so much, its almost as though he might be sulking at Ole, saying "ok you want me wide on the left that's where I will stay". It is common knowledge that Marcus sees himself as a central striker, but that Anthony Martial has that 'gig' at the moment and whilst they seem to be able to link up, that Marcus's efforts at times could be described as minimal and sometimes leave Martial 'dangling' especially when Rashford does not to see, (or maybe he chooses not to see) and doesn't make the right supporting run.
I have no doubt our current front three are destined for greatness, but there is a lot of work to do yet before the full potential of this trio is realized, and Rashford has as much to do to improve as Martial and Greenwood, part of which might be to come to accept that he may eventually have to become the junior/third place partner, if this is ever to become the successful triumvirate all United fans hope for!