People make a lot of noise about false CAT-ratings. Why don't the same people make a lot of noise about what really matters when it comes to electrical safety?
Most countries around the world have a lot of legal regulations about education and long-time experience specifying what kind of work you are allowed to do on almost ANY kind of electrical equipment or wiring.
My humble guess is that only a very few of you are legally allowed to touch anything that will require a multimeter with a CAT-rating.
This is rather beside the point and this argument is without merit, but I am going to respond because it is also completely wrong.
That certainly isn't true in the US, and I don't believe it is true most places in the world. I don't know about Norway -- maybe all the stories about the excessive regulations are true, but your description isn't true in most of the rest of Europe either. In the US you can't operate as a professional electrician without a license, but you can do almost anything in your own house that doesn't require a building permit. I know this isn't true everywhere, but I don't believe most places are nearly as strict as you suggest. In most of the US that means that you can pull new circuits from the main breaker panel. Even if you can't, you can repair existing wiring, and you can certainly measure it with a voltmeter even if you don't change anything (for instance to diagnose a problem for which you might hire an electrician to fix.
And pretty much all of the regulation that does exist stops at the wall outlet. There is basically zero restriction on who can work on a mains powered electrical appliance. Anyone can (legally) replace a worn power cord or troubleshoot a line operated power supply. Of course in the CAT rating system that is only a CAT-II environment, but it is still a situation where you want a meter that is not adding any danger -- and meters with deceptive labeling are definitely something worth being upset about, even if they are totally functional for low voltage applications.
Likewise, there is no restriction (in the US) on who can work on high voltages that are not part of the power distribution system. I have in the past worked on high voltage power supplies capable of generating from hundreds to thousands of volts. They don't have the same power behind them as a main distribution panel, but you can still have quite a bit of energy stored in a capacitor. There is zero certifications, regulations, or licenses for who can do that in the US. Other countries do have mandatory engineering licenses to be a professional electronics engineer, but in most places that is only required if you are doing so professionally. And again, it doesn't exist in the US. There is absolutely reasons for hobbyists to have safely designed meters, even if they are not doing the specific things that the cat rating is designed for (i.e., working on power distribution networks).
I do sort of agree that many people make too big of a deal about it, as if there is no value to a meter without CAT-4 600V ratings. There are plenty of uses for multimeters that are never anywhere near a high power / high voltage circuit. The majority of electronics hobbyists would be well served by a safety-low voltage meter, or at most one that honestly meets CATII-300V, and the features this little $25 meter has that make it attractive: high resolution and low ranges are specifically things that don't require high voltage surge capability.