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I guess you mean on the desktop? If this thing runs linux, it is as serious as everything that can run Linux.

OpenBSD has a history of supporting the Loongson arch. https://www.openbsd.org/loongson.html

Only some Chinese distros support it. For a lot of serious things, you will need to have binary support - commercial software, docker etc.

That's why they have:

LoongBT, faster x86 and ARM binary translation, 213 instructions