I always appreciate hearing everyone's experience. Anymore, I have to take such "advice" from influencers as anecdotal evidence. Yes, it worked for THEM, and that's great. Does not mean it's going to work for everyone, however. (That's in regards to her experience with cardio)
I agree, though, that it seems strength training is universally beneficial for a large chunk of the population - and there's plenty of studies that support that, and it's good to have yet another voice out there encouraging people to pick up some weights.
I may also be in her club where intense cardio isn't necessary. I saw plenty proof of that doing the 12-week STS 2 rotation. Going to be doing an XTrain rotation with a major increase in cardio the next 12 weeks, and it'll be interesting to see if I'm just spinning my wheels or if it's as helpful to me as it was when I first did a 12-week XTrain rotation a couple years ago (I will say all the HiiT definitely improved my cardiovascular endurance, and my clothing was fitting pretty nicely, too.)