Maybe not as much as the "h" word but some people do seem inordinately emotional about their opinions on disc brakes and tubeless tyres in particular. Oh, and not having clipless pedals.
Fair enough liking or not liking any of these but there does seem a religious element for some
I very much agree with you on this, I have the feeling it applies to many other things as well. I understand why but find it odd.
Three people I know have ridden tubeless and gone back to tubes, in one instance because the initial setup was almost certainly wrong and the rider had little interest in learning how to "manage," for want of a word, tubeless.
I've ridden tubeless for +/- 10 years. We had initial difficulty in getting a setup that suited me and there is a learning curve for daily use, none of it time consuming. The main problem I had with the initial setup was finding quality valves.
On a day to day basis if one uses a screw on track pump connector it's advisable to tighten the valve nut against the rim and give the valve core a nip once a week. With a screw on connector both have the potential to unscrew when removing the connector. I check this before every ride as part of my pre-ride routine when I check tyre pressures.
I wouldn't go back. One tyre when replaced had seven sealed "punctures." I've had one complete failure when I rode over a broken beer bottle, wrecked the tyre with a 2cm gash in the sidewall. It was pouring with rain and very messy. Could/would a tube + boot have fixed this? Impossible to say. I walked the three miles home. It is the second time in my cycling life, +/- 58 years, I've failed to complete a ride. The other was when I had a free hub failure and was rescued by the sportive support vehicle.
I can plug a tubeless tyre faster than I can change a tube.
I still ride with both a free hub and on tubeless.