ok, let's define 'amateur' and 'professional'
I'm a mining professional, I get paid to do mining-related things and I hold a membership of a relevant Professional Institution.
it means, among other things, that I don't take part in digs; the reason being, that I know from experience that in the event of a serious mishap occuring and the Coroner or other public official becoming involved, I will be dragged into court and asked questions regarding my opinion of the proceedings, in my experienced capacity. Offering the defence ' not my dig, guv' will not avail in this situation.
I either do things to a professional standard, or not at all; this doesn't include scaffold poles holding up loose roof sections, access shafts supported by oil drums with the ends cut out, or a number of other things diggers commonly do. I do actually know what the structural calculations for a timber heading look like, and they aren't pretty.
So, yes, I do think that people who go on solo trips are amateurs, but we aren't necessarily all using the word in the same sense.
realistically, most people do it to some extent, I've done it myself on occasion.
what's wrong with saying Reinhold Messner is a professional who does his trips for money? He is the best there is, an extreme athlete who does big things which don't come cheap, and that effectively means he has devoted his life to them. TV Channels and magazine publishers make money out of him, kit sponsors make money out of him, why shouldn't he be rewarded commensurately?
I had no patience with this discussion when rugby union went professional, and don't have any now. The idea that players should lose money for the 'privilege' of playing I front of a major paying crowd on national and international tv, seemed to me then and now, to be quite wrong. I was once threatened with with a ban from school rugby for racing in a motorcycle meeting for prize money, and I felt then and now that it was none of their business.
so, I don't retract a word about Messner's professionalism, but I do rather resent the accusation that it is a cheap shot of some kind.
as for shining visions, well yes, maybe.... Fiennes' book about the unsupported Antarctic crossing ends by offering various views on the final curtailment of the expedition on the grounds that it had acquired the distinct possibility of ending in death beyond reach of rescue, out on the Barrier. Shackelton made the same decision, but with the critical difference that it meant consciously abandoning the principal aim of his expedition, whereas Fiennes claimed to have achieved his aim in that he had passed beyond the edge of land, being on the Ross Ice Shelf by then. Scott led his men to disaster in pursuit of an abstract aim widely believed to be impossible.
Amundsen, the complete professional, led his men to triumph, and came home safe and early, discarding supplies to save weight as he came - because he could afford to. Yet he was scorned in some quarters for this .. he gets my vote, though.
''the stopes soared beyond the range of our caplamps' - David Bick...... How times change .... oh, I don't know, I've still got a lamp like that.