Meant to be ridden or attempted at least. Inspired by this video and this discussion, and also from watching videos of flatland bmx riders who rarely touched any part of the bike besides the bars and the front pegs.
So yeah, purely aesthetic pretty much. 
Thanks! There’s nothing more to it than what you see: 1.5" 48-hole bmx rim on a Suzue front hub with 14mm axle, standard Diamondback pegs, a closeout bmx fork from eBay, basic bmx stem, slightly dinged spare Sun unicycle seatpost, and Wal-Mart grips. To mount a saddle, I guess you’d want to slot the top of the fork and clamp a seatpost in. (25.4 mm I think, but I could measure if you wanted to know for sure.)