Enas:
First of all, lets not forget that death feederism is not a thing, its a category of fetishes, because everyone has it different! And those fetishes share a common quality, usually puting the fetish above even your life. And it can get really weird and complex.
For example, i am a death feedee. I want to be fattened up to death, but that in itself wouldn't be enough to... bribe me into going down that path. What really turns me on are other things that can only exist if im being fattened up to death. For example, i wanna be incredibly weak (as in both physical weakness, and no self control) and absolutely dependent on a feeder woman who's on one hand really sweet (like, she constantly feeds and f*cks me, etc) but on the other hand a manipulative abuser who feeds my eating and cumming addictions in order to make it impossible for me to refuse to give consent, even as she feeds me through heart attacks. Being fed to death turns me on because its proof of how extremely weak and dependent i am to someone who plans to fatten me up to that point, thats what turns me on about it, not death!
In fact i kind of wish to find such a feeder, one to which i can consent to be handled in such a way that i loose the ability to ever retrieve my consent again. Trapped for ever with her feeding and fucking me mercilessly! O.o
And this, Bellyempire, is why feedism isn't inherently death feedism. Enas is a death feedee, and this is what gets him going. Your average feedist won't be into this.
Death feedism is a niche within a niche.