I’ve found a few and they seem to be growing as of late:

• questions about Lemmy demographics
• anything discussing negative effects of porn
• benefits of AI
• negative effects of “wokeness”
• critiquing of individuals in trans community
• calling out men as predominant perpetrators of violence towards women
• anything US pro-conservative

One topic that I’ve noticed used to be a nonstarter and is now popular is anti-democrat conversation.

What are other nonstarters you’ve experienced?

EDIT: seemingly asking people what the community doesn’t want to talk about is a nonstarter