We have gone a bit off topic, but I really can't share the consensus. I feel that a wrist support is a tool for bowling a better game, for some people, I don't see it any different from bowling 2 handed or bowling high revs.
A wrist support won't make you bowl higher scores, but with the right knowledge behind it, it can. eg. George F.
Bowling 2 handed can give you the exact same advantage, again...with the right knowledge behind it.
I've never used a wrist guard on a permanent basis, only when I was recovering from injury.
If they gave such an advantage, everyone would be using it.
George is the only Oz bowler I have seen use one at the top level, but it definately isn't the wrist guard that makes George the bowler he is, it's his thirst for knowledge and perfection.
Cos I love Georgio like a hole in the head
, I won't be too harsh on him, he is extremely consistent with his approach to the game, technique and delivery, however being able to use a wrist guard, allows him to utilise this even further. Without a wrist guard, he would fine himself completing different release points, positions, just like anyone else without the use of one. Would it have much of an effect, not sure, he doesn't bowl without one for long enough to really know, but I would suggest the consistency would be reduced and in turn make his shot making less effective, it might mean one less strike a game and at his level, that is a big deal.
You are also right in saying, that, not only in Australia, but around the world, the majority of top bowlers, simply don't use them. If anything the use of a wrist guard, restricts the ability to generate a proper release of the ball. However, IMO, in regard to the top section of your post, using a wrist guard is entirely different to someone who has developed a two handed game or someone who has developed a rev dominant game. The key word being developed, whichever bowler you want to look at, they have spent countless hours developing their release, shot etc etc, a wrist guard, especially an adjustable robo cop one, gives a bowler the opportunity to negate developing a consistent release, a boost in their rotation rate, thus increasing their entry angle and carry percentages.
IMO, a non adjustable guard, should be used as an aide and not a cannot be lived without item, ie supporting injuries, low wrist strength or training devices, and also used the whole time for all shots from start to finish of a game or block if using one.