Users should ideally report bugs to their distribution, not to upstream. The distribution package maintainer then does triage to determine if the issue is specific to the distribution package or should be forwarded upstream.
That's how it used to be in the past (and still is for enterprise distros because you might as well use the support contract you paid for). But lately users have gotten more savvy about talking to upstream directly, especially since more and more upstreams are now on easy-to-use websites like GitHub instead of mailing lists. That's still fine if users do their own diligence to ensure the issue is with upstream and not with the distribution package, but alas they don't all do that, leading to these spurious reports.
That's how it used to be in the past (and still is for enterprise distros because you might as well use the support contract you paid for). But lately users have gotten more savvy about talking to upstream directly, especially since more and more upstreams are now on easy-to-use websites like GitHub instead of mailing lists. That's still fine if users do their own diligence to ensure the issue is with upstream and not with the distribution package, but alas they don't all do that, leading to these spurious reports.