someone with 81 % air in their chart superficial ?

so my mom is a cancer and her boyfriend a libra she asked me about his chart because she often finds him superficial they are 10 years together how come they are still together it often seems more like he doesn't have interest for her but only uses my mom because she does everything in the house and now when she started working and going to the gym he all of a sudden starts to talk her down, he has a stellium in the 5th house she has a stelium in the 2nd house both have a gemini ascendant

his elements

81,1% Air

7,1% Earth

5,0% Fire

6,8% Water

her elements

28,8% Air

20,5% Earth

4,9% Fire

45,8% Water