This is exactly how I have disposed of old dolls in the past. Remove the silicone or TPE from the metal skeleton first, then place in black household waste bags. Metal skeleton folded up and straight into waste metal skip. Quick and easy.
We had a post made earlier last year where the owner showed the doll being dismantled and the nature of the photographs made it very disturbing and upsetting. Not all of us find it easy to take apart a doll that we have been fond of, but which has had its day - which is why we have discussed other means of disposal.
Ideally, of course, there might be somebody who would like to have the Doll if it’s advertised, regardless of its condition - they might use it to practice repairs on their own dolls, or even use it for parts or spare TPE, again for damage repair. But when there’s no other option and the doll has to be disposed of, we need to find ways that we can cope with ourselves, and dismantling is not for everyone.