The purpose is to be able to run a decent Linux setup while also having MacOS for things. Not everyone is stuck on the anti-Apple train; some of us put software on all the platforms and thus using the hypervisor for this use case is quite comfortable. Disclaimer: personal experience - I too use UTM for highly productive things..

Wanting to run a single OS at a time is anti Apple now? Run MacOS or run Linux, why run both and create more problems than it solves and waste resources?