Once I bought a cheap oliv green hunting and outdoor knife in Norway, a bit like a Mora in Stile, but probably Asian production. I misused it a bit in the garden and the blade broke, what I hadn't expected.
Later, after I read a lot about the mora companion knife in the internet, I wanted to know it. I put my stainless version in between two logs and broke the blade. That was pretty easy and happend as fast as expected. As you know, the blade is relatively thin.
Yes, I used a Mora classic (carbon steel) many years without breaking it. No problem if you use it as it should be used.
After I lost it in France, I replaced it with an Opinel No8 Carbone without any problems and used it over decades, I just can't remember in which box I put it, so in between I had to buy a new one. (Probably stolen by extraterestic forces, I think you know the problem.)
With my incredible cheap full tang knife, I think I payed round about 10€ 5 years ago, I can do much heavier things than I would try with a mora knife.
Unfortunately it was a home brand of a shop that changed the owner and they don't offer it any more...