I don't really mind people with nice swishy hair advertising crap hair products.
I suspect Lees wouldn't be seen dead actually using such cheap shampoo - Pantene is what my notoriously cheap ex buys our dds to use when they stay with him - it's a supermarket level shampoo, which is fine but hardly an exciting campaign.
Not so keen on the idea that flouncy hair is a female marker. I dated lots of men in the 80s who had gorgeous long hair, & are mostly balding now. I also had flowing, glossy locks. This had nothing to do with our sex - we were all just young, pretty, & hairy!
Long, shiny hair is nice. It's not a marker of being a woman, though.