Nice write up but don't think it's that difficult or expensive in the long run.
Airshot or equivalent you can get for about 40 quid. Or borrow one.
Sealant is a tenner or so. Valves you need once and between 7 and 15 quid whatever you want to spend.
Muc off tape is 7 quid a roll on ebay or equivalent.
Tubes are what? 6 quid an end if decent.
I've had tubeless and non tubeless tyres in 26", 650b, 650b+ and 29er and not really had many issues with any. Some combos work well, some are a pain, but never spent more than 45 minutes or an hour on a wheel. Topping up, I am lazy, maybe once a year. Maybe I've just got lucky in 6 years of tubeless.
I dont think you have to do it, but the horror stories that it's a dark art etc is a little misleading. Mainly you just need decent tape and I'd go over the rim with fairy liquid to get it to pop out properly but it's a logical system.