Pretty safe bet any respected cue builder can play a bit. If not they must be getting feedback from somebody who plays well.
The only world-class players that I see using standard maple shafts are the Taiwan players. Most of them like Southwests and they use STANDARD shafts that are usually 13mm.
The Predator FAT 314-2 shaft was created for Taiwan players.
If thick shafts don't play well, why do they use them and why do they win world events with them?
Not sure where you going with this?
To tell someone that they are using the wrong type or make of shaft is like telling someone that they are married to the wrong looking partner.
Beauty is in the eye of the beholder.
The Player should play with whatever type of shaft that they determine is better for them.
They should make their own decisions & NOT blindly follow what Anyone says.
Marketing ploy? Sure, I guess. Factual though that LD shafts are supposed to be just that -LD. You can argue some are not, some are LOWER def, some are TRULEY Low def, etc.RJ, ever try pinball or darts? You may like them. Jk, LD shafts are a marketing ploy, not sure why nobody gets it. You still have to compensate regardless of LD or standard maple. I refuse to pay for a cue, custom or not, and than pay for a aftermarket LD shaft. If you like LD shafts, buy a OB cue like you or buy a custom cue from a maker who builds his own LD. When you buy a custom cue you are paying for the builders ability and acquired skill set, the minute you put a LD shaft on it, you lose what you paid for. If there was a no deflection shaft you would still have to learn how to play with it, than you LD people would bash that. I'm not bashing LD shafts, I just think they have the same value if not less due to materials used as a custom shaft.