I believe the meaning in plain English is:
Let's not focus too much on the past problems that a group of people had, but let's make sure that the situation is improved for that group right now.
Focusing too much on past and try to tip the scale _because_ the past was so bad may lead to bad outcomes today. It may be perceived as a search for grievances and retribution and not the equalization of outcomes that one claims it should seek.
Look at the current admin's overt tipping of the scales for white heterosexual Christian (in name only) males to see evidence of DEI in action.
They just don't like it when it's other people
Got it. I agree. If there is no modern negative consequences then no redress is needed.