Agreed.
Borg's achievement to complete the RG-Wimbledon double 3 years in a row from 1978-1980 was amazing. He won those RG titles engaging in long, gruelling and seemingly never-ending baseline rallies, and then a few weeks later won those Wimbledon titles serve-volleying behind pretty much 100% of 1st serves and playing considerably more aggressively.
The likes of Borg, Connors etc. being defined / solely defined by the number of grand slam titles that they won makes zero sense. And the prize money factor cannot be emphasised enough. In 1980 for example, Borg earned greater prize money after winning a tournament in Boca Raton, than he earned combined from RG (where he won the title without dropping a set), Wimbledon (where he won the title beating McEnroe in their legendary final) and the US Open (where he finished as the runner-up with McEnroe getting his revenge). Lendl earned greater prize money from winning an invitational tournament in Antwerp in 1985 (actually the biggest prize money cheque in tennis history at the time), than he earned combined from RG (where was the runner-up), Wimbledon (where he lost in the 4th round) and the US Open (where he won the title). If there were so many other tournaments around nowadays that paid out greater prize money than the grand slams, and in some cases greater prize money than multiple grand slams combined, would grand slam counting still be seen as such a big deal? I strongly doubt it.
Chris Evert voluntarily skipped RG for 3 years during the 70s (when she was literally never losing on clay and would have been the overwhelming favourite), to play in World Team Tennis which offered much greater prize money, and Borg did likewise 1 year during the 70s as well. When asked why she did that, Evert responded 'no-one was counting back then'.