You’re very welcome.
With additionally there are full theme that include some prepackaged theme-component .
Theme components can be added to any themes be it the default theme or a custom one.
Iirc Western Digital I think it was sponsored the Docs plugin
There is a very wide number of companies that use Discourse as a support forum system.
A lot will come down to how you setup and configure things. You set things to auto close topics. Ie in Meta a solved topic is iirc set to auto close after x time after a solution is chosen by Op or Staff.
Checkout Documentation section here as they are experimenting with a more robust system in that area for better ease of use
If you would like someone to directly help designing and setting up your support forum marketplace is a great place to make the request. Imagine many if these folks will have samples of what they have done for others