I have a first hand experience in refuting some parts of this argument.
In 2011 we decided to hire Jim Urbina to renovate/restore/repair what was then Dellwood CC in New City, NY. Originally an 18 hole estate course for Adolph Zukor designed by AW Tillinghast, the course had been significantly altered by William Mitchell and then RTJ Sr and others. While the original Tilly routing was preserved, bunkering style and placement, along with shrunken greens and misplaced tees. In short, we needed not only a "surgeon," but one capable of cutting out the toxicity and replace it with holes that would adequately reflect, yet provide a modern interpretation, of Tilly's architectural philosophy. Jim Urbina, along with talented shapers like Jeff Stein, and the passionate assistance of Brian Chapin provided just that.
Dellwood CC was never better than a bottom tier, financially unstable also-ran in the design-rich Met section. It was closer to most people's last choice, hardly a more than a footnote in the NY-CT_NJ golf scene. We renamed the club to Paramount CC ( honoring our founder's professional accomplishment) and never looked back.
At no time did we ever think we are a Top 100, 150, 200 US course, nor did we ever expect to crack the Top 25-30 of the Met Section. We still don't (care). Jim, Brian, et.al. had zero arrogance about trying to improve on Tilly's original work. Instead, it was our job to provide the membership with a fun and interesting 18 holes, modernize the design, and leave it better than we found it...in that order. Those were, and are, our only goals.
I'm biased, but I'd say we succeeded on our goals as well as successfully elevated a middling (generous) course to some notoriety, and did so in the backyard of what I think is the deepest rota of wonderful designs found on this planet. We recognize how strong some of our regional neighbors are, yet we are constantly told how much fun and how challenging Paramount is. Those kind of words and the facial reactions of our members and guests make it all worthwhile....proving just how vital it was to bring together a great "surgical" team.