Kind of weird, as literally no time seems to transpire between the events of 1 and 2. I guess they will also kill the Beam Dog specific content like the Black Pitt.
Going back and suggesting just to play the first one would kind of be jarring in contrast to a game that begins development soon and probably will be out in 2028 and 2029 and of course you wouldn't be able to import your characters into the sequel.
I kind of get it to a point, there is a lot of praise for 2 and 1 definitely gets overshadowed.