IMHO, most of the recommendations for cleaning attys is pure, unadulterated BS. HighPing's method works OK, but there is NFW that you can "resurrect" a dead atty WITHOUT REBUILDING THE COIL. The HighPing method cleans an atty; it does not resurrect it.
So the first thing to do is to spend about $5-$10 and get a multimeter to test for an open circuit. If the coil is burned through, it's RIP and no amount of voodoo, burning of incense, or wican ritual will help your atty. I like the wican stuff because it allows you to run around a forest with naked women, but that will not do anything for my atty.
I rebuilt a bunch of attys to acquire a survival skill in the case of a ban (but at less than $5 for genuine Joye's not worth the effort), and the failed ones I took apart all had a crud accumulation in them. It's the same crud you get when you burn something during cooking and happens every time you burn an organic compound (Carbonization). Juices are a combination of water and organic compounds; the sugars (many sweeteners are mostly forms of sugar) in your juices get really sticky and cruddy when heated.
There is a wick that passes through the coil. Drippers dewick the atty claiming that it is not needed for dripping. They are probably right BUT one should never try to dewick a used atty, because there will be some carbonization between the wick and coil which acts like a glue: pull on the wick on a used atty and you are likely to damage the coil.
One would certainly not use many of the methods or solutions recommended here to clean the burnt food from their ovens and pots and pans. If it does not work with those items, what makes people think that it will work with an atty? Chemically, products like alcohol (methyl, denatured ethyl, or isopropyl) make no sense to me; vinegar is an acid and oxidant and will work somewhat, but stinks like hell. Baking soda and denture cleaner and even oxyclean are better choices
The HP method is a hot water wash followed by a dry burn. The dry burn is the same process that one uses in a self cleaning oven: the high temperature reduces the gunk to ash (completing the burning process) and the ash is easy to remove.
I supplement the flush with a soak in a mild oxidant like denture cleaner/baking soda and an ultrasonic bath beforehand. It's the best way to knock loose any of the burnt material.
As the OP said, so much depends on the type of juice and vaping habits. Clean often and don't forget to prime your atty after using. Once the wick starts to crud up, it takes only a short time for the atty to fail. Unfortunately, there is no easy way to inspect an atty unless you debridge it, and debridging only works for drippers.