I work on a support desk for a living.
Having so many support tickets open unable to be attended to, to the point where you need to mass close them without doing any work to remedy is incredibly poor.
You either need more staff or a complete change of management.
It is indeed quite poor, but it is also very important to make the distinction that these are not support tickets, but bug reports, which have the purpose of informing us about problems, so that we can fix the source of the problem, and not about providing support to the reporter (even though in some cases we are able to give a bit of advice).