There are two licenses that include restrictions like that that I know of:

- https://github.com/raisely/NoHarm/blob/publish/LICENSE.md

- https://firstdonoharm.dev/

> perhaps we do need a new popular license or set of variants that exclude certain industries.

Such a license would not be considered open source or Free Software.

Someone else posted this link about a similar situation in the past: https://en.wikipedia.org/wiki/Douglas_Crockford#Software_lic...

I honestly don't understand what objecting to them as a sponsor does. Sponsorship benefits the project for everyone. Is the objection to both the sponsorship and their presence in the conference? Folks who don't want to engage with them at the conference can simply not engage with them.

Also AFAIK one of the conferences objected to their presence, so they weren't able to have a booth there. Individual participants are in their right to make these decisions and act on them (like that one conference did). What exactly is the outcome people want?

Sure, but that's an orthogonal point to the one OP made isn't it? Contributing to open source projects is incompatible with not wanting someone else to use your work based on ideological differences. Perhaps contributors don't think about this until they're faced with a situation that makes them uncomfortable and I sympathize with that and maybe we should start adding disclosures that say "your work may be used by entities you do not want using your work".