The suspension platform kona uses on their bikes, except for the new coilair is a faux bar, which means it is just a disguised single pivot. In order for it to be a four bar, the pivots closest to the dropouts have to be below the pivot. The pivot on the four deluxe is above the dropouts which makes it a faux bar. Faux Bars are considered singlepivots mainly because they share the same riding characteristics, a lot of pedal feedback, and a ton of brakejack. Platform valves hide the bobbing sensation to a degree.
My bike bobs, it isn't noticeable much because of the propedal platform on my dhx5 though any bike will bob.
Back to the topic of the bike, nice, enjoy it, and do flip the stem.
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Appreciate the old bikes more than the new.