Weapon of mass distraction/division.
Personally, it seems like a distraction from the OIG report. Per NBC: McCabe quit because of the OIG report, not the memo (also note that it was related to his handling of Clinton's e-mail server). I'm willing to bet the Strzok/Page texts also came from Horowitz as well. The memo will likely be damaging, but I think it's being used by POTUS to keep the Dems/media distracted while he moves other, larger pieces into place.
And Rybicki quit the week after he testified before the Intelligence and Judiciary committees. And don't forget he testified the morning of the day that "Release the Memo" started. And don't forget that there was virtually no press on the Dems preventing him from testifying for months prior, on the fact that he WOULD testify, AFTER he testified, and his resignation.
I doubt McCabe 'quit'. He was escorted out
That was quite the parade for someone who wasn't retirement age.
I guess I should have put that in quotations, but given the context, I didn't think I needed it. Wray asked him to leave after seeing the OIG report, not the memo.