Yes. If it's opt-in, then I can certainly live with it and I understand why people might use it. I'm just pointing out that features like these, while well intentioned, still add bloat to the browser. Sometimes saying no to feature inclusion is the right thing to do in the long term even if it has a use in the short term. I'm a big believer of the Unix philosophy of do one thing and do it well.
Modern browser are basically OSes not by coincidence but because they are basically used as OS replacement. I think Tanenbaum (citation needed) wrote that an OS basically does two things: abstracting the HW and managing resources.
Browsers do the latter as much as an OS
