...cont
Americans have, however, sometimes carried simplification to extremes. When I was at school in Britain half a century ago we had to spell today and tomorrow as to-day and to-morrow, for example, with hyphens. (If you really are an old geezer, presumably so did you.) Thank goodness they've gone! Americans have just taken the same course as we ourselves have - getting rid of hyphens all over the place - a stage further, even when their presence is actually helpful.
I refer especially to co-whatever. If, for instance, one writes cooperative instead of co-operative, a reader may get as far as the 'r' before realising they're pronouncing the word wrongly. And is a coworker someone who orks cows or a colleague? (Yes, I know there is no verb to ork, but what about write? Does cowrite mean to participate in joint authorship...co-write...or a ceremony involving cattle...cow-rite?)
As regards noone - if they do use it - they have clearly done the same...removed the hyphen or word separation and good luck to em, I say! The fact that I wouldn't do so is neither here nor there and it is certainly no corruption, but just a continuation of an ongoing process. Linguistic "evolution", in other words.