I regard any device that can't be recharged, refilled and have the ability to change the coil as disposable.
The current games of making Ds with larger batteries and increased capacity is meaningless as you end up sending a larger lithium battery and a larger case to landfill instead of several smaller ones. Same goes with Ds that can be refilled - if the battery can't be recharged and/or the coil can't be changed then it's still bin fodder as soon as one of the last two craps out, or - can be recharged, but the coil cant be changed. All the same shit shallowly disguised and promoted as a huge leap forward.
The most recent release I've noticed, is Innokin releasing some D product where you buy separate batteries to throw away after a single use as they don't have recharge capability, so less plastic gets thrown away - I don't know if the 'pod' or coil can be replaced and/or if it can be refilled as I found it this 'innovation' too depressing to read but the cynic in me believes probably not.
Even though the writing has been on the wall for some time I get the impression the feckers churning out these poxy things are dedicating all their efforts into trying to con people into believing that throwing larger brightly coloured pieces of crap onto the street less frequently than smaller brightly coloured pieces of crap is environmentally friendly.
Personally I'd like to see their businesses go under. It's just sad that in the longer term they'll probably take a lot of others with them.