Thing is, unless you are talking about use as a blunt trauma weapon, weight is almost universally a negative for a knife. If the weight signifies and advantage in strength, size or durability, it isn't a big deal. If the added weight doesn't produce significant gains in these areas, than that can create the evaluation of the knife as "too heavy". It doesn't mean the raw weight alone is more than the user can physically carry/handle, but more of a relative value judgement. In other words, for some, the Cryo is too heavy for what it brings to the table. If it was titanium, or had a G-10 or carbon fiber non locking side, it would not really lose any advatanges as far as strength or durability, and it would drop some unneeded weight. Now, the primary reason that the Cryo is so heavy is cost. Solid SS handles are very cheap. It can also create the illusion of greatly added strength, which is probably why people like the heavy weight. At the end of the day, its just a value judgement of weight vs function. For some, the extra weight is not much of a factor compared to what the knife brings to the table. For others, they would go elsewhere to get something that can do the job without wasting ounces.
Personally, I like a knife to weigh only as much as it needs to in order to do the job I use it for. I wouldn't carry a Cold Steel Spartan to trim string or open letters, but I do appreciate the FRN handles saving weight, while not sacrificing strength. I wouldn't want to imagine how much it would weigh if it was an all steel knife. I love EDCing my CRKT Eros for light duty, because it is extremely capable, and weighs only 1.3 ounces. Now that is efficiency!