A lovely idea but the workload would be immeasurable. We don’t have the bandwidth to re-cover past threads/reports sadly.
Some issues are easier to fix in a hotfix and some require a lot more care and attention due to inter-dependencies and other mitigating factors. Some things do just linger for a while depending on priority.
To mark one as acknowledged means it has gone in to our bug tracker. It could be fixed quickly or might take some time. Sorry we don’t have a clean way to revisit old reports to update them.