What a narrow minded thing to say.
Some barriers to consider - lack of representation, lack of female mentors, unconscious bias within the industry, sexual harassment in the workplace, increased scrutiny with higher expectations than their male peers, the "you only got the job because of your gender", the list goes on.
The 'lifestyle' argument is also nonsense. There are plenty of jobs with similar lifestyles that have better gender ratios.
Diversity is a good thing. We owe it to our female peers to make the industry as open and welcoming as possible.
Aviation wasn't invented in 1994 when you were probably born. The AWPA has been around since 1950, Debbie Wardley won her court case against discrimination in 1979. I stand by my statement that there are no barriers to any female who wants a job in airlines. As to plenty of jobs with similar lifestyles I can name the most obvious-flight attendant. Anyone of those F/A's could train to be a pilot but a very small number actually do. The reason-they don't want the job.