"Having a specific conference for women in computing is definitely a DEI concern;"

The phrasing is ambiguous.

A specific conference celebrating women in a field they have been historically underrepresented in is exactly what DEI is about.

So for whom is this a concern? I am guessing for people who are anti-DEI?

Again, the phrasing does not make it very clear.

OK, so you tell me what they meant since you're so smart.