Do you mind elaborating on the bolded? As someone, as I've suggested in this thread, who is thinking of getting back into the hobby.
What is it about jersey cards that have no value? I would have figured a piece of a player's jersey would be a pretty good thing to hold.
And to expand, what would then be the most sought after, worthwhile cards? Autographs?
In the old days, players would wear a certain amount of jerseys a season (like maybe a few a year, old jerseys have repairs on them) and later, companies would buy from that fixed supply, competing with the jersey collectors. The last 15 years or so, the majority of "game worn" jerseys, not only are the players' identity dubious since you can't tell who wore what from just a square of fabric, the teams "manufacture" these jerseys by having players constantly changing into new jerseys...especially star players. These jerseys are sold to card manufacturers to make a quick buck every year.
On top of that, especially for retired and rookie players, many of the jersey swatches on cards don't even come from game used jerseys. You'll see things like "Event Used" or "Photo Shoot" jerseys where someone, often the card manufacturer, works with the NHLPA to contrive some sort of event (special game or even just an event where players in street clothes just don a jersey for 30 min or less) and then use those jerseys on their jersey cards.
Thus you get so many of these jersey swatch cards in products...the worst thing is the card manufacturer clearly puts the bogusness level of these swatches right on the back of their cards and the vast majority of collectors don't care.
When I collected cards, I really treasured jersey cards of retired stars and HOFers from real, game used jerseys. To me, a real GU card of say, Lanny McDonald in a Calgary Flames jersey was a minimum $25 value pulled from a pack when I put it in my collection even though it may sell for $2 on eBay. While a 2005-2006 Thomas Vanek rookie jersey card that sells on eBay in 2006 for $25 was only worth $2 to me in my collection...because it was photo shoot.
So...
The experienced collectors in this thread treat on-card (hardsigned) autographs by the actual player to be the best type of memorabilia on a card. We can tell who signed (and touched/handled) the card usually and there's no way the card manufacturers can get over the players, NHLPA and the agents...they always have to pay a player per signature. That guarantees a certain level of scarcity and player real-ness. As long as the players continue to hand-sign things, we can't go from 100 Gretzky signed items to 10,000 Gretzky signed items for the same cost to the card manufacturer. They can't manufacture hard signatures. On the other hand, the sticker signatures are a bit like manufactured sigs so we frown on those.
Apply this logic to today's cards. You look at RPAs (Rookie Patch Autos) and how much collectors value how the patch looks. I personally won't pay much of a premium on those for my PC because the patches on 100% of those cards are all photo shoot jerseys. I pay for those cards because they hold a rookie year autograph from the player and are considered true rookie cards. This is why SP Authentic's /999 Future Watch autograph rookie cards are so highly regarded despite not having a patch. The important parts, the autograph and the rookie card factors, are both there.