His basketball argument is a stretch at best. Boston, as you mentioned, had two examples. The former court had dead spots that Celtic players knew about and there were guide wires that helped defend inbound passes. In hockey, the ice was shorter than any rink in the league, allowing Bobby Orr to pick up a head of steam and score at will. I think when you throw in tons of old examples of strange dimensions in baseball, football fields that sloped dramatically or were rock hard, and every third stadium and arena being a shithole for one reason or another, tennis is just keeping up with sports in general.
The better point in the piece is that even with changing surfaces, it was always quite difficult to develop a skill set to succeed in all four majors. And now, some tennis enthusiasts fondly remember an era full of aces and 3-shot rallies.