I commented on this over on FB - but here's my 2 yen:
Interesting article from Jan Heine - as a wheel manufacturer, I look at this from slightly different angle. While I do agree with Jan on some points, I'd say that other points are not in line with my own direct experiences. Namely:
1) We have rarely seen tubeless 'blow offs'. This will happen mainly when tire is over-pressured and can occur not only with tubeless, but also tube clinchers.
2) I have seen far more discrepancy in the tire mfg measurements than the rims , in terms of BSD adherence. Many people will corroborate that tires are more difficult mounting than others. In quality rim manufacturing, the BSD (bead seat diameter) is held to very tight, ERTO / ISO standards.
3) Mechanics need to take a little care when mounting any tire - and especially tubeless. Making sure the bead hook is clean and free of any burrs or bumps. You can get away with a sloppy install on tube / clincher, but not with tubeless. So, if allowing for sloppy mechanic skills is a criteria - hmmm.
4) Rolling resistance of tubeless is less than tube type in almost all comparisons of the same tire (tread /casing / etc). The hysteresis losses associated with a tube are well known and tested. For road tubeless, rarely is more than 20ml or so of sealant added - that accounts for minimal hysteresis loss. We do not have loads of sealant 'slopping around' in the tire. In fact my recommendation is to drain the sealant once the tire has been coated and any small leaks taken care of. There is honestly no reason to run excessive liquid sealant in road tire. Besides being unsafe for other riders in the group if you do get a punc and spray the road.
In short, the 'Trouble with Road Tubeless' is more about establishing proper handling and mechanic process than about the products and over generalizing a few incidents.