Not seeing the danger.. unless your cracking your griddle to over 450 F ... and then suddenly dropping the temps ..
Someone less careful might accidentally do just that
The only time ive actually seen a pyrex dish break is on top of the oven during a hot water bath the thing shattered because water boiled over the side onto the stove creating an un-even heating surface and kabloom there went the cake dish.. since then 2 years straight ive used the same glass both with the same method up till a few months ago when i bought a stainless steel chamber swapping out the old bel-art..
I'm not even going to get started on why heating shit on an oven, griddle, or anything even remotely electronic that isn't sparkless is dumb--but it is. This is terrible advice to be giving to people. This process shouldn't be done indoors without a proper laminar flow hood AT ALL. It should be done in a well ventilated area far from any possible source of ignition. If you're going to apply heat to a dish during this process, you should be using a sparkless hot plate. No ifs ands or buts.
If you don't want to--I'm cool with that. However, I'm not gonna sit here and let someone else read that dumb shit and go home and blow themselves or their loved ones up because they're marginally less careful than you are and are being given terrible advice.
So yeah.. if theres any danger i seem to be avoiding it each and every time for the past 2 years damn near every week straight.. thats an awful lot of good luck ...
I'm glad that your luck is good, or that you're careful enough to make this work for you safely. In either case--I don't have faith that it will work out the same for everyone else and neither should you.
Have you met many people?
I can name 10 right now, rapid fire, who I'm sure would hurt themselves trying something like this if all they had to go on was your comments. Maybe you don't have that perspective, but I do. It would be irresponsible of me, knowing that, to act like this is a great idea--especially when there's no benefit to be had by doing it.
Ever sprayed butane onto a hot griddle before? I have wanna know what happens? NOTHING.. it evaporates.. why? why no flame you might ask.. because theres no spark.. theres no ignition theres no source for the butane to ignite..
You must have one of those fancy sparkless griddles that don't exist and have never been produced ever. There is a reason sparkless hot plates exist. Scientists who need to apply heat to things near flammable vapors don't feel like rolling the dice every time they need to do that.
I won't roll the dice with people's lives either and suggest that your idea isn't dumb.
Let's recap:
You're missing the point.
Advice is being given here, and on most forums, for a general case. The point is to minimize risk. If you know what you're doing--that's great.
Everyone else doesn't necessarily. I'm not going to suggest that people do something that carries an inherantly larger risk for, quite literally, zero benefit relative to a less risky method.
You can tell me about your experience till you're blue in the face--it will not change my stance. I'm concerned about the experience that other people will have, not with patting you on the back for developing a process that is riskier for no reason. If you want to do it that way, great. I've answered your question as to why people do it this way. If that doesn't change your opinion, cool. I'm sure that no one will argue with you about what you choose to do.
However, the fact remains:
The way you're doing it does
not make a better product, the process is
not inherantly improved, and it
does carry a larger potential for risk and accidents--especially in the case of someone reading up how to do this on the internet who may not be as knowledgeable and as careful as you are.
Period.
End of story.
If there were
one iota of benefit or increased quality to be gleaned here then I would change my tune. Quality is everything to people on this scene. The fact is, though, that there just isn't. It's not better, it's more risky and nothing more than that.
TLDR:
The water bath is a nearly fool proof method.
Do not be silly or short-sighted and assume that fools will not read threads on this forum and others and try to do this process. A fool proof process is recommended for what I hope should now be an obvious reason.