Typhoon That's all well and good, I guess, if you are into numbers and how things are changing. But, even with all that 'modern tech' built into the clubs, a person still has to swing them. A person. And that person wants to hit a shot that is 140 yds.. So that person will pull a club that they hope will go that distance for them. Maybe 25 years ago it was a 7i. Today it may be a 9i. What has been gained for that person? They still hit 'a club' 140.
And you are reading here on this forum where people are having troubles with hitting these new clubs, or do you not see that in their posts? Having trouble hitting a 9i now..........because the shaft is 1" shorter perhaps, and head weight is lighter (much lighter)???
Check out the lofts on the Tour Blades vs. the lofts of the 790s. Why can I play the Tour Blades better than the TM irons???? And, I can still hit 140. With 1 of them. (well, maybe)😉
Just saying, all the tech is lost on me. And quite certain many others. But, I don't sell new equipment for a living, and do understand all the marketing. If they leave things alone, just 'make clubs', they will still sell clubs. That is a given. No need to try to 'improve' everything every year. Save all that R&D money; it is wasted on a shit ton of players. Look out the window....you see what I mean.