The amount of research (or lack thereof) into whether the name was already taken in the same domain is disappointing. For me, F8 will always be this:
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I programmed the real F8 back in the day, so I’m quite defensive about it. It’s most charming quirk: doing a long jump clobbers the accumulator.
Wasn't quite as strong a match for "G8", but G[n] does show up in a lot of product descriptions to indicate what generation of the product is involved.
LG also put out a phone named the G8 Thinq in 2019.
I would generally agree with the speaker that it's hard not to collide when using a 2 character name. The "for a CPU architecture" narrows the collision space substantially, which does affect the full accuracy of the statement. But the spirit of "2 char IDs are collision prone" is true.