If someone is filing an issue to an open source project -- whose maintainer will very often be working on said issue for free -- the least that person can do is submit the issue with the information that the maintainer requests.
I really like this idea if for no other reason that it would raise the bar for submitting an issue. So many open source maintainers on Github are overwhelmed with vague issues or support requests masquerading as issues.
Issue templates already exist. As I've seen recently the possibility for multiple issue templates (that also auto-apply some labels) even exists now. If an issue doesn't fall into any of those templates, they are still free to close the issue and ask for it to be resubmitted with the correct information.
There are some projects that are fine with having support requests on the Issue tracker, and some that have another system for that. At the very least, it may highlight missing documentation.
I really like this idea if for no other reason that it would raise the bar for submitting an issue. So many open source maintainers on Github are overwhelmed with vague issues or support requests masquerading as issues.