I agree, everybody assumes if she was any good she would get plenty of playing time. Not true, she performed well, just look at the numbers. Tara decided not to play twin towers together. The reason Betts didn't play is pretty elementary, it is Brink. I guess Clingan can't be any good because if he was, he would get many more minutes. Hurley also pretty much refused to use twin towers with Sanogo, even if Clingan was no worse than the third best player on the team.
If Olivia Miles was on Uconn and getting 10 minutes a game backing up Paige, some of you would say she can't be any good either, even if she was a very high recruit and in fact putting up very good numbers when she was in the game, just like Betts. Is it possible there is something concerning behind the scenes? Sure, but assuming something must be wrong just because a player doesn't get time behind one of the best C's in the country doesn't make sense.
Some of the minutes that Brink was sitting also went to other bigs and that is the closest to a legitimate concern. But even then, those were pretty much proven very good players that were seniors, with different skill sets, including the versatile Haley Jones a sure early draft pick, Prechtel a 6-5 girl who can shoot threes, and Bilibi a sensational 6-1 PF that can dunk. They might have received a little bit of senior entitlement minutes too vs. the freshmen.
Whether Betts should have gone to a program so loaded with bigs and in particular a C in Brink that might be ahead of her for two seasons? Maybe not, maybe she thought Tara would use them together and then she didn't. Some of the same concerns might have applied to Cardosa going to South Carolina. She knew she had Boston ahead of her for two years, and that she could have started at all but a handful of other schools, but went there anyway. Apparently that was not an issue for her, and Dawn made it considerably easier by trying twin towers a significant part of the time, and also by resting her starters a lot more than most coaches in blowouts.