Good points Roj.
Considering that back in the day, a 1-3 watt Krypton or Mixed Gas (Krypton/Argon) laser used to achieve RYGB was $8-11K, just for the laser. Projector builds back then were $15-20K at least. Given this comparison, a quality Kvant projector is a good deal, far, far smaller and lighter, too, with no 6/4 or 8/4 3-phase power cables and disconnects, water hoses, water filters, water pumps and pressure regulators along with their added equipment cases to lug about that required air-ride tractor trailers for transport.
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Everything depends on everything else