The average skydiver only remains active for 7 years so a lot of times we "reinvent the wheel" because there is no history of what has already been done experimentally. I see and hear novices all the time using and doing things that they were told is the most modern technique without any clue of the actual mechanics involved. It is important to keep that information available. I no longer do any rigging or instructing (beyond a little impromptu coaching) but I when I see a novice struggling with something simply because they are trying to keep up with "what's cool" I am happy to point out any known solution that might already exist.
Sometimes thats amusing, such as the time a fellow instructor asked to use my unpacked rig to demonstrate some things to his FJC class. My SOS, no RSL, bungee pilot chute, B12 snaps, equipped rig didn't quite fit the bill for what he needed to teach and he himself was confused with some of those features. For info this occurred in '99. There is a post on here right now, talking about lubricating the soft loop of the 3 ring to prevent hard cutaways. Ever since mini rings and risers came out, hard cutaways have been a topic of discussion. My last new rig, they called to make sure I actually wanted standard rings and risers and not the "cool" mini's. For a new gear buyer, I could see them accepting what their gear dealer recommends and not what is best for them in the moment.
We are seeing it all the time now with jumpers flying canopies that they cannot land and the community response has been mandatory canopy training. Go out and watch a big-way land during no-wind conditions and you'll see from the circus carnage that that hasn't worked! But it keeps the jumpsuit repair people in a job. I recently had an old-time jumper, that was returning to jumping, ask me what happened to the days when you pulled down the toggles and the canopy stopped. He referred to it as the "golden age of parachute landings" and he was referring to the mid to late '80's when grass stained, dirty jumpsuits weren't the norm.
I see novices with fall rate and tracking problems because they didn't learn the basic body positions before throwing in mega-booties, weight belts, and competition grips. I got my AFF rating without booties and am still one of the few at my DZ that does FS, up to 40 ways, without them.
Yes! Keep offering your advice and opinions even if some may think they are outdated. If nothing else it will keep the "skygods" grounded in reality and points out the differences of what really works and what is the latest faddish technique.
Sorry, long post. Rant over!