There are several ethical issues. First, the 'vore' concept itself is very abnormal and can be considered a form of grotesque violence. Adding 'painful' and 'fatal' intensifies this. Secondly, in a society that is striving for equality and positive representation of the LGBT+ community, using 'gay' in such a context can be seen as stigmatizing. It gives a wrong impression that the LGBT+ community is associated with such extreme and unethical content. Overall, this type of fanfic goes against the principles of ethical writing and positive social values.
The main ethical concern is the promotion of violence and harm. 'Vore' with pain and fatality involves extreme and disturbing content that can be harmful to readers, especially those who may be sensitive to such themes. And when combined with 'gay', it may wrongly associate the LGBT+ community with such inappropriate and harmful content.
Ethically, 'gay vore painful fatal fanfic' is a big no - no. The 'vore' aspect is not only disturbing but also against the basic values of non - violence and respect for life. When we have 'painful' and 'fatal' attached to it, it becomes even more unethical. Regarding the 'gay' part, it is wrong to use sexual orientation in the context of such inappropriate and unethical content. It may lead to discrimination or negative views towards the gay community, which is unfair as the LGBT+ community should be associated with positive, healthy and equal - rights - based content, not something as extreme and unethical as this.