Tech companies wouldn't be offering their employees who are too busy to start families the perk of egg freezing if they offered "great work-life balance." They would be offering more flexible part-time work, so that employees could both have children and continue working, instead of putting off having children.
Companies with great work-life balance still offer egg freezing. It is simply an option to the female employees who want to work a lot and postpone childbearing. Having that option doesn't mean other employees don't have a great WLB if they want to go for that.
