As has been mentioned already tire volume and tire pressure may make tubeless more or less suitable for your use.
I have not toured on tubeless, but have been running tubeless on my MTB for some time now. I went from a leak once or twice a week to no flats in quite a few months. The flats I suffered before going tubeless were all from thorns.
Most of the disadvantage I read about never really materialized. I had no trouble getting the beads to seat even with a hand pump. I also barely ever spilled a drop of sealant or got it on my hands, but when cleaning up the hose and syringe it was obvious that the stuff just rinsed off easily with water.
So far I have only needed to install the tires and then subsequently dismount one to replace a spoke nipple that had a stub of spoke broken off in it, but both operations were zero mess.
All that was with Stans No Tubes wheels and tires. Not sure if other rim/tire combinations are similarly easy to deal with or not but mine have been zero fuss, much less trouble than the previous tube setup I was using.
I wouldn't hesitate to tour on tubeless if there is a suitable tire/rim combo for the size and pressure I want to run. If I were to tour on the higher volume tires that a lot of folks prefer it would be a slam dunk. Since I have been touring ultralight and with 25mm tires I don't know if it is a good option for my paved road touring.