Kray:
My first rods were all graphite so they were hardly slow & whippy. Ironically, I now own graphite rods that are less than 20 years old that are much slower so it’s not the technology as much as it is the taper and the skill of the maker.
That being said, I have no beef with fast rods, as matter of fact they are my preference for warmwater. However even my fast rods throw the "recommended" line weight just fine. The last fast rod I purchased is a 9'0" 6wt Winston BIImx on deep discount after they were discontinued. It is a good thing it throws a 6wt because I already had a 9'0" 7wt and a 9'0" 8wt so the last thing I needed was a labeled 6wt that was a 7wt or 8wt in disguise...
It seems to me that this "mislabeling" began AS technology progressed, lighter and longer rods became possible and because of clever marketing, the rage. When I started fly fishing, a 4wt was a rarity, 3wts hardly existed, a 5wt was considered light, and a 6 or 7wt was an all-around line weight.
For decades I fished nothing BUT a 6wt on the Letort & Big Springs like Marinaro & Fox before me and NEVER had a problem catching plenty of spooky Cumberland Valley trout. Fast forward to today and there are more than a few fisherman who wouldn't DARE to fish anything heavier than a 3 or 4wt at those "technical" places because it isn't delicate enough or so they been convinced by some "slickety" commissioned clerk in a fly shop.
The irony... because of their line weight paranoia they are fishing a rod that is labeled as a 4wt with a line labeled the same, however their 4wt line weighs the same as my 6wt line… To add to that misconception, if I showed them my preferred LABELED 6wt rod, they would be shocked I would dare use something so heavy and “clunky” at a place so “technical…”
Go figure. 🤷♂️
This line weight paranoia nonsense works the other way too. I see many old Orvis bamboo and other older glass rods for sale that were designed for heavier lines and NOT always for heavier silk lines just to throw that comparison out the window. Almost exclusively the less scrupulous of these peddlers will imply that Orvis or those other clunky rod builder didn’t know how to design rods back then so this 6 or 7wt rod in 1972 has miraculously morphed into a 5 or 4wt in 2022...
That being said, I won’t argue that ANY rod may easily cast a few different line weights or that a person may like an Orvis Limestone Special with a 5wt line rather than 6, however in these instances the seller is misrepresenting a rod because he or she knows that in today’s market, there is a much better chance of selling a vintage 4wt than trying to sell a vintage 6wt…
…even if the vintage 4wt ISN’T a 4wt…
…unless of course you use an overweight 4wt line…
Using your golf analogy, with the demise of balata balls & persimmon woods the drives got longer. However nobody decided that a yard should be 3.5 feet on some courses and 2.5 feet on others to deal with the egos of golfers…
This is my ONLY beef with the pig in lipstick analogy; fish, enjoy and love what makes you happy but don’t move the goalposts. Keep the labeling & definitions consistent and don’t lose sleep over fishing anything over a 3wt. You can’t have it both ways and not expect a lot of confusion and eye rolling.
One thing you did nail on the head is I am a grumpy old man!!