Tom,
I think I know what you're saying.
At the time, the whole idea of "inland golf" was revolutionary!
After all, by the late 1800's, golf had been played on the seaside links for decades...centuries, actually, and the idea of moving from that naturally open, sandy, choppy, undulating, wind-swept terrain into the inner-breast of the country landscape was a daunting and skeptical proposition, and it also seems if I read my history correctly that some of the first attempts were pretty dismal failures, because for the first time in golf, a course had to be more man-made than God-made, and there was really no precedent for that, either architecturally, agronomically, or culturally in fact.
So, when the first successful inland courses in the Heathlands began to pop up in the English countryside, which not incidentally was on terrain much more similar to what folks in places like...oh, let's say Philadelphia and south Jersey had to work with back in the states, it would have been natural for those pioneers in the US who weren't blessed with seaside terrain to stand up and take notice.
Especially considering that men like Wilson, and Crump, and Alex Findlay, and Tillinghast, and Samuel Allen, and likely others had made a number of golf-related pilgrimages overseas (following the Macdonald example), and were most definitely very aware of what guys like Colt, Hutchinson, Fowler, Simpson, etc., had accomplished, and in some cases, seem to have struck up personal relationships with these men, that were further strengthened when the Heathland gang made visits to the US and either contributed to or advised or simply visited inland courses that were being built in the states.
I wish I could find it, and it might have been part of Tom MacWood's research, but I do recall coming across something that mentioned Colt visiting Hugh Wilson at Merion, and also visiting Seaview.
I think that's part of why we still argue about who did what here, but to me, as in the recent Cobb's Creek research, it's more important to understand why these men worked together in the way that they did, and also to imagine the shared sense of discovery and adventure that they must have collectively felt. After all, they were both pioneers and trendsetters, breaking with centuries of tradition.