I don't get why that guy didn't just link to a source, but I found this: https://en.wikipedia.org/wiki/Arm_Holdings#Founding

    The company was founded in November 1990 as Advanced RISC Machines Ltd
    and structured as a joint venture between Acorn Computers, Apple,
    and VLSI Technology.

Which links a blog post and an LA Times news article as a source: https://community.arm.com/arm-community-blogs/b/architecture..., https://web.archive.org/web/20210325060916/https://www.latim...

Google is your friend.

So, not a source.

There's some claims in this article and in the routers article they use as source, but they're unrelated.