I find TC gives me the consistent, reliable vape kanthal never did. My coil instantly hits the temperature I want it to and stays there. No ramp up time, and no overheating. Yes it takes a bit of experimentation to find the right temperature, for me it's always in the 200-230C range, and I don't see how this is any more complicated than adjusting your wattage on a kanthal build. I think recommended temperatures would be largely pointless because not all chips measure in exactly the same way, and on any device, small static resistances and not calibrating at precisely 20C can easily cause drifts of >10C. The sweet spot for the same atty, build and juice is not the same on my VS rDNA40 and IPV D2, for example.
The main health hazard with ecigs is the chemicals produced when they overheat. I find TC reassuring in this respect, and the peace of mind probably contributes to my enjoyment of TC vaping.
I have little experience building with kanthal (mainly because TC eliminated all my issues with kanthal), I'm sure it can be great if you're good at it, but I'm not. I think the same is true for TC builds - it's easier to stick with what you're good at, and for me that's not kanthal. I think a big problem is Ni200 - it's barely fit for purpose and gives a lot of people bad experiences. Ni200 was the first generation of TC wire and in my opinion it's obsolete already.
Some people like TC, some like cloud chasing, some like MTL, some like sub-ohm, drippers, tanks, cartos, roast chicken eliquid etc. etc. this has all been done to death a million times before with, after much pissing and trolling, the same conclusion: there are different ways to vape and people have different preferences.