@SkyWhisperer - I don’t recommend splints. They will immobilize your hands and that is not a condition you want. I suppose wearing them for a few hours might be okay but wearing them overnight is not, in my opinion.
It’s interesting that the article mentions the triangle shape of the extensor pollicis longus muscle at the base of the thumb between the tendon muscles. Some time ago I saw an invention online that claimed to cure people of carpal tunnel syndrome.
It was a soft brace for the wrist, but it claimed to shape the muscles at the base of the wrist into a triangular shape, effectively reshaping your muscles in such a way that the carpal tunnel naturally opened up without the need for surgery.
I would be willing to try something like that, because it appears to cooperate with nature, rather than working against it as a splint would.