Open-source is heavily community-oriented, and yes, I think that subverting the contributions of the community like this (and honestly, just kind of being a dick about it) is unethical, yeah. It erodes the fabric of open source, and will be detrimental not just to OSS, but to the field of software in the medium and long term for the reasons I stated earlier.

To your side note: "take" is a very common synonym for "thought"/"opinion"/"view" in the version (dialect? I guess?) of English I grew up with. If you're unfamiliar with it, that might be a regional or generational effect. I don't know. I'm not a linguist.