They aren’t a problem if they meet a golfers need.
I’m saying your argument that it’s just a different number slapped on the bottom of the club is incorrect. Today’s 4i at yesterday’s 3i loft doesn’t make it the same club with a different number on the bottom - even if length and swing weight and all other measurement factors are the same. They are a different animal. Today’s 4i is designed to produce the same results as yesterday’s 4i, but make it easier to do so - especially for the average golfer with slower swing speed.
Tour pros typically play more traditional lofted clubs. They hit it a mile bc the top guys swing their irons around 100 mph.
Yep. Today's irons help one pull the same numbered club that they used to pull when they were younger and swung faster. That's a big selling point.