If the CFO is saying to use Excel, you use Excel. This isn't the hill to die on, and fighting it makes a horrible first impression if you're new.
Whether I use GPL, MIT, or a custom Copyleft, it doesn't solve the Cognitive Tax problem. Licensing doesn't fix the fact that a 'community' of highly-paid engineers expects me to provide years of non-perturbative logic for free, while they lack the bandwidth to even peer-review it without an LLM.
You say 'Free Software' protects the user. Fine. But who protects the outlier creator from being mentally strip-mined by a sea of Takers? You’re suggesting a better cage, not a path to sovereignty.
Again: If you can’t verify the math without a chatbot, are you a 'contributor' to the common good, or just a sophisticated parasite?"