If you must really know my .02, I am not a fan of the Flat BB press, i prefer the DB to it, gives me much better results.
Also some folks like my brother in law, have shoulder issues which kind of makes it difficult for them to lift the BB in the first place, so they may choose a different option.
I am not an advocate of either, rather indifferent, but dissing one for piping up the other, is borderline broscience because it assumes one size fits all. You can never with all your degrees and education etc predict what sort of shoulder issues anyone who uses DB or Smith or BB actually has. Its about knowing what works for you.
Overall I am aware that BB is better, and Smith works better for isolation work (iirc Coop said this)