This only holds if you assume that the hiring process is already fully meritocratic (which it very clearly isn't) and that it isn't missing talented women already (which it very clearly is).

If hiring managers are, subconsciously or not, more likely to pick the male candidate when faced with a choice for equally capable male/female candidates then there is inherent discrimination in the process and the DEI approach balances the scale.

This means more women working these roles with the same capability as men, it doesn't mean replacing men with women who are worse at the job, which ironically is an attitude making up part of the reason efforts like this have to be made.