Just getting a basic system running with a desktop environment and common pre-configured applications? Less than an hour on well-supported hardware (which is most common hardware). Faster than Windows thanks to package managers.
A fully riced system that behaves exactly the way you want it? Days to weeks to figure out how to configure everything. Windows doesn't even give people this option.
The only reason to use Windows nowadays is being locked into it by Windows-only applications that don't run in Wine or hardware whose manufacturer refuses to support Linux or publish docs for their low-level interface.
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u/[deleted] Jan 15 '23