my objection is that warfare involves people intentionally harming each other, and that doesn't seem to be what's going on here. it's not that war is a more extreme version of the situation; it's that it's directionally different
rather, hashicorp is struggling to not go bankrupt, so they've decided to switch to making a proprietary product instead of an open-source products; and terraform users, naturally enough, are reluctant to make their infrastructure vulnerable to a proprietary software license. hashicorp is not intentionally harming terraform users, and terraform users are not intentionally harming hashicorp
they're just not continuing their previous cooperation