The thing is, look at the occupations of the teams you named: TV hosts, models, cheerleaders, etc. Occupations that revolve around looking good, which doesn't exactly translate into racing ability. You get their opening intro where they pretty much say they're there to be eye candy ("we're going to use our looks to get ahead"). 21 to 25 we had that team archetype of "matching blonde women".
We appear to have had more of the right type this season, women with athletic backgrounds, and they're still looking like the first boots at this point. So I don't know what to say
A thing I can't understand with the US version, too, is why they seem hesitant to cast lesbian couples. Even in 26, the love season, they didn't take that perfect opportunity and cast 2 male gay teams.