I agree, 50% is probably an unreasonable goal, I could maybe even see arguing that any percent based goal is a bad goal. The goal should be “enough so those who are feeling disenfranchised don’t anymore” but that might be too squishy :)
That’s a laudable goal, and to that end I imagine it would do a world of good to stop the constant exaggeration of how disenfranchised those groups are (NOTE that I’m not saying these groups are fully enfranchised, only that the disenfranchisement is exaggerated). At some point, advertising tech as a bunch of rapey, Nazi frat bros is probably more offputting than whatever discrimination actually exists. Let’s ditch the boogeyman and see what happens.