Yes, of course, me included. My thinking here is based on some recent experience in wildlife photography workshops (in Texas). Some of the participants new to bird photography asked about "a starter mirrorless outfit that's good for bird photography," and I had to conclude that Nikon is not yet able to offer a basic kit that matches the appeal of either Sony
( A7 IV or A9 II) and the 200-600, or Canon (R5 and the 100-500). The Z9 is terrific but it's a heavy, high-priced pro-level camera, and Nikon's current cheaper models don't track birds nearly as well as their competitors. The 100-400 is good but really too short for small birds, and the 500mm pf is fantastic but is expensive and of a fixed focal length. Nikon really needs to come out with a less expensive camera model with its state-of-the-art autofocus features, plus the apparently long-postponed 200-600mm.
I hope this isn't considered camera boosting or bashing; I am just commenting on the current state of what's available from each company.