I come from the moto world, have over a million miles on them with about half in the dirt... I also have many, many thousands of miles on bicycles with a large portion off-road, some in the very remote backcountry... I have my own take on tubeless, etc. and recognize we all have our own perspectives and use our machines differently in different places so there aren't hard and fast rules about the matter.
I'll start by stating that on my electric fat-bike that has high-quality tubeless ready rims and tires I still run tubes but they are full of stans (2-4x what they recommend).
I'm not that keen on going fully tubeless on a wheel that even though it's called "tubeless-ready" requires sealant to be tubeless. I had a lot of motos with spoke rims and all with an exception I'll get too I ran tubes in. OTOH all my motos with non-spoke rims I ran tubeless... simple punctures were quick duty to address with a plug kit and in all those miles never had anything a plug kit wouldn't address. On the spoke wheels I got really good at repairing flats trail side and always carried a spare front tube (can use the front tubes in the rear if push comes to shove)... but it's really hard, even just breaking the bead is really hard (keep chanting - finesse & patience, not force!) and I replaced all my tires if just for the practice - also to make sure they were done right too since I've had too many tubes pinched by others - they usually have a low paid kid doing that stuff at the shops.
When I got my first BMW that had the cross spoke rims now it was the best of both worlds... the spoke heads are outside the beads so no sealant required and you can still true them etc. No tubes and use plug kits for repair - again never let down in my history.
Now with the bikes, here in AZ, no matter where you ride you are going to pick up thorns (*lots* of goat heads everywhere) and if you just run tubes without any sealant you will be dealing with a flat every other ride. I hated slime, just wouldn't go there and dealt with patching trail side and carrying spare tubes.
Then I was introduced to stans and my world is a much better place. Saw a demo at the overland expo and that convinced me to try it in my tubes and I've never looked back. Pretty much any mess is contained in the tubes (like a stans condom) and any tiny bit that manages it's way out onto the wheel is easily cleaned up - I couldn't care less if some gets on the inside of the tires. New tires, throw out old tubes/tires, rinse talc out of new tubes with water, fill with stans then install new tires just like normal, easy peasy. There is some tiny learning curve to making it clean, quick and easy but it's really no big deal.
I started doing this close to 10,000mi ago on my electric bike and instead of getting flats every other ride I get zero flats - haven't had one yet <touch wood>. Stopped bothering with carrying patches and tubes except when going into the backcountry where the consequences are much higher (means a possible long rough walk and I'm old and disabled) since rescue may not be easy or even achievable. I still carry a pump but since stans it only gets used for other people (usually attractive gals - I never said I wasn't a dirty old man ;-} ).
While I understand that going fully tubeless may buy a small bit of ability to run lower pressures or go faster over rocks that might give a pinch flat with a tube or tear a valve stem and it will save a little weight, I just don't see the point of the hassle, especially on electric... maybe some day I'll give it a try but if a rim can't hold air without sealant it's pretty well branded in my head to run a tube... it does hardly seem worth the much greater hassle when it comes time to change tires - I'm sorry, it just doesn't get much easier than my stans in the tubes ritual...
I've looked at the tubliss but that also seems way more cost/hassle than any benefits it might bring.. admittedly no first hand though.. last I checked they don't make them for the wheels/tires I run regardless...
But hey - we all have to find what works for best for each of us... there's not so much right ways and wrong ways, just cost/benefit IMO... and it's best to keep an open mind - so easy to get locked in our ways and admittedly that slowed my stans adoption and I realize I was just being stupid... the cost of going fully tubeless in the hassle doesn't seem worth the very minor benefits... to me...
YMMV