It's possible to shoot very accurately with a double action only revolver, 1.5 pound Open gun trigger, or a Glock. It's also possible to switch back and forth with a little dry fire and a trip to the range. If you don't like a platform, don't use it. But it's possible to shoot well with any quality handgun be it safe action, double action, single action...
Just look at the five division IPSC Masters and four division IDPA Masters. Heck, Leatham won the USPSA Production Nationals with an XD, Sevigny won with a Glock, Jarrett won with an LDA, Angus Hobdell shoots a CZ....