I directly disproved a few of your claims and that stands.
Well, you really didn't. Look at the list with knives you gave as examples, it's a mixture of framelocks and linerlocks, different steels and blade grinds.
None of them even remotely resembles Rat 1' elements.
WE does an excellent heat treatment on 9Cr18Mov. I'd put it up against any D2 from China (or Taiwan) any day of the week.
Maybe, I didn't say anything about it but it is inferior to D2 steel when both are done correctly. I was using my Taiwan made D2 Rat to scrape grout and such work and it holds excellent edge.
I don't look at YT "tests" as anything else but entertainment and maybe some reference material. In vast majority they are not standardized and with all due respect for the mentioned names,
their findings mean only what they found about specific example of a model, steel, bevel angle and type of material they cut.
They are too many variables to say "this steel is better than that steel" because this or that youtuber did some tests.
The class of just Civivi knives offers an incredible diversity of ergonomics.
I don't disagree, never did. Just they don't offer anything close to the Rat1 knife, it's an obvious fact, as design and as price point.
Are there any knives from any country that could be compared to the Rat 1?
I'm not aware of it. They purposely collected elements for a knife that should be used in specific environment. The result was a knife, very useful also for other "city" tasks,
that's why the Rat is so popular. Rat1 is unique design, reminds me the process Gail Bradly went trough when designing the GB1, another unique and very successful "working" knife.
When you are talking about ergos and Chinese knives - give me example of a Chinese knife that will sort of retain your hand in the handle when pushing forward or pulling back ?
Look at the Rat's handle, there are "guard" up front and "hook" at the pommel that will hold your grip in between, helps if your hand is dirty or wet or whatever.
No Chinese design like this, at least not with blade without choil and for this price point.
When you're talking about why framelocks are not suitable for such work - Ontario created a beautiful blade, absolutely suitable for working in the elements - the Avispa.
It was great "kephard" geometry on the blade, almost identical to the Rat1 geometry of the handle and it was a framelock.
Problem was - they had the bright idea to place the clips over the lock bar and in most cases the knife was absolutely useless, you wouldn't open it onehanded in any case...
Where is the talk about the Avispa now ? People bought it, few installed clips that will not hit the lock bar and used it, but its not a popular knife, nobody mention it anymore.
The smaller size - Zankudo is still frame lock but it is much smaller knife to be taken seriously, not even close comparison with the smaller Rat2 model.
I own and used all of the models I'm talking about.
So the "problem" with framelocks and "bushcraft"( I hate the word) use is not like you cannot use it, of course you can use a framelock out in the elements
and tons of people are doing it very successfully. The problem is redundancy. A framelock is finicky, not everyone does it well as Hinderer in example.
You drop the knife on a stone and you have no guarantees that you won't damage it... Simple liner lock is "protected" more or less and does not have bare metal to touch your skin,
the scales of your choice will give you better grip under any conditions.
Again, IMO you are not comparing correctly your Chinese examples to the Rat1, "very good steel" isn't "tool steel" as D2, "diversity of ergonomics" is not a knife with guard and hook at the pommel
as the Rat have purposely, and none of your examples are cheaper than $40.