BR is a trend, sure, but then again, its basically just another form of FPS/TPS which has been around forever, and as long as the games are good, or have some unique statement to say, its all good.
I do wonder if Activision is regretting how Blackout was packaged. On one end, CoD is always good for like 10-15 million copies sold, and Blackout was surely an attraction in Black ops 4, but I'm sure they got to look at that 25 million downloads in a week for Apex and think how they would have done if they FtP'ed Blackout, given that brand name recognition. Don't get me wrong, the numbers they sold are good (and they are $60 purchases), but if 25 million downloaded the free BR game from the Titanfall devs, imagine how many would have grabbed a FtP Call of Duty BR game, monetized via $10 Battle Passes. They could have legit challenged Fortnite for the BR crown, instead of being a footnote in the craze.