Agreed, it is subjective.
I personally vape a STRONG MtL vape. I use clapton coils on a Merlin RTA atty with 36mg 50/50 juice. The coils range from 0.11 to 0.17 ohms depending on what gauges I am trying and how many wraps I do. I vape this on a DNA200 at 380f to 430f. It is a damn decent vape to me. Most, about 90%, of the people who tried my vape found it too strong for them. With a little tweaking this build could easily be tamed down to fit their sweet spot. I have helped many find that sweet spot.
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Thats the thing, wire types, resistance, juice strength, etc are all so customizable that I believe "most" can find a setup that is quite decent to "them" under 480f. Those that cant are a minority in my experience.
Also, I am not talking about the "extremes". Those folks know they are at the extremes, and consequently they accept the risk of being on that edge. The average vaper is not on the extreme, and I firmly believe the average vaper can find a build that doesnt require 500f to be considered decent. Now, granted, it might take a little experimentation, but very few "require" vape that hot to get a decent vape.
When I smoked, towards the end I smoked six or seven 50 ring gauge cigars per day and inhaled every puff. That was an extreme, the average smoker does not do that. I chose to, and I also assumed it was a lot riskier than simply smoking cigarettes. It was a risk I accepted. The average smoker did not require inhaling cigars to get a decent smoke.