I thought spoked wheels are flexier, and thus likelier to absorb a big shock and bounce back than a solid wheel (like hitting a rock, log, or landing from a 'sweet jump').
Bend vs. break, flexy vs. stiff.
As stated, some spoked wheels can be run tubeless - the spokes terminate on a lip on the OUTSIDE of the rim, not in a row of holes down the center. Some people have also Gerry-rigged spoked rims to run tubeless, taping/ caulking the holes in the center of the rim where the spokes thread thru.
FWIW, I'd rather plug a hole in a thick tubeless tire than change a tube in a spoked rim. Changing my KLR tires, I managed to dick BOTH new tubes, and even one of the old ones. Clearly there's some operator error involved if it takes you FIVE tubes to get TWO tires aired up, but I never had such issues with tubeless.
The rationale that it's possible to save the day by changing a tube in the field is offset (IMO) by the increased chance you'll need to - tires designed to be run with a tube are thinner and easier to puncture (but that does make them a little easier to spoon on and off a rim)... IMLE.