Most female commentators are bad. Most male commentators are also bad. Where I think this approach often does women no favors is by pushing them front and center without the experience most good commentators develop by working their way up the ladder. This happens with men, as well.
Take college basketball over here, for instance. Steve Lavin was awful when he started at ESPN, after getting kicked to the curb by UCLA. By the time he went back to college coaching at St. John's, I was sad because he had become the best analyst they had. Bob Knight himself was wretched. They paid him a ton of money, stuck him on the biggest games and got rid of him the moment the contract was up. There simply wasn't time to turn him into an end product.
Rebecca Lowe, who fronts our NBC Sports coverage of the Prem, is quite good. She also spent a decade in lesser positions before taking the job, and has had plenty of time to settle into her present one. Robin Roberts can call a game anytime, anywhere as far as I'm concerned across a ton of sports, but unfortunately the money and media stature on Good Morning America were hard to turn down.
Looking at TNT's selections, it at least looks like they've at least picked people with proper CVs, rather than sticking novices on games the way ESPN likes to do over here. You're the ones that have been watching them, so you tell me if they're any good. Not everyone who works games or in the studio ever improves on their day one performance. I mute the television every time Jesse Palmer comes on, because if I have to hear that guy spout one more cliche the television might end up with a remote through it.