Hi,
Indeed, the wmic command utility is being deprecated, meaning that it will no longer be further developed or updated, but still it will be working as long as the underlying system will continue to support it, no worries there.
Ref: https://learn.microsoft.com/en-us/windows/win32/wmisdk/wmic
The supported replacement for it would be CIM as stated here: https://learn.microsoft.com/en-us/powershell/scripting/learn/ps101/07-working-with-wmi?view=powershell-7.3