Pi 5's speed makes it a useful and usable general-purpose desktop, with limits.
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Raspberry Pi 5: available now! - Raspberry Pi
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Where to Buy a Raspberry Pi 5 in the U.S or UK
Raspberry Pi 2 Review: A $35 Computer Can Do a Heck of a Lot - WSJ
Raspberry Pi 5 Benchmarks: Significantly Better Performance, Improved I/O Review : r/hardware
Raspberry Pi 5
Raspberry Pi 400: the $70 desktop PC - Raspberry Pi
Introducing: Raspberry Pi 5! - Raspberry Pi
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What's the Difference Between a Raspberry Pi and a Computer? – RaspberryTips