Obviously, it is a lot for Barry to sift through on The Flash as he has lost his very close friend.
The end of the multiverse’s impact, coupled with Oliver’s death, would be a lot for anyone to take in, and from what Eric Wallace told TV Guide it won’t be an easy thing to get over, although it sounds like there will be positivity too.
The multiverse is no more following “Crisis,” and sadly, Oliver is too.
Not to mention having to deal with the whole new world of Earth Prime.