We do have a duty to consider the ethical ramifications of what we're building. But I won't spend hours of engineering time building a share button system beca

We do have a duty to consider the ethical ramifications of what we're building. But I won't spend hours of engineering time building a share button system because there's other priorities. Say spending that time building a "delete account" button. There's other more relevant ways to build privacy conscious features than to focus on a share button. Also, you underestimate share button providers by saying they aren't a consumer product. Your average WordPress user doesn't know (or care) about building share buttons.