Isn't anchoring (to current pay) a hiring tactic that virtually all companies use with all applicants, regardless of gender? Does that somehow have an outsized impact on women? Sincere questions.
I believe you should hire someone based on the role and the value it provides as opposed to anchoring to the applicant's current pay.
I would guess that this practice does impact women more often than men; however, I'm not certain. In general, getting rid of the practice would make pay more equitable across all genders.