So as I mentioned, the GK Plus in 4034 does perform when people test it (spoiler alert, he is not actually testing the 3V):
This guy tested it on wood too (and in other videos a bunch of other materials) to disproof the 4034 haters.
Now this one is a bit controversial. The guy says it is "D5 tool steel", but there is no such thing. Unfortunately he doesn't show the side of the blade where there would be TAIWAN or TAIWAN O1, but he is either confused about it being tool steel and it being O1, or he doesn't know because it just says TAIWAN, which would make it SK5. Either way, it broke on him, which is not all that common, even after 5 years of "abuse".
So is it a REALLY good counterfeit? Or a poor heat treat? In the comments some think he got unlucky, others think it is fake. But if it is fake, where are all the other fake GK? Also, you'd have to invest a lot to make a believable GK fake. Many comments asked him if he meant SK5 or O1, but he never clarified other then:
"No it was a boxed original from Cold Steel."
"No it was actually a real cold steel blade, not a rip-off. Is it worth splurging for the San Mai steel, so this doesn't happen? I don't know."
"A lot of you are of the same opinion. I'm not one for providing BS. That Cold Steel knife cost me at the time $179.00 from the
Knifecenter.com, the San Mai version was + $300 and something. It was not a clone."
So I think we can rule out fake (and he painted the sheath olive himself). He bought it around 2015, which is right around the change from SK5 to O1, so it could be either with a poor heat treatment. I asked him one more time to clarify.