One does wonder how these meters that don't meet their rating make it into the main stream market place. Bearing in mind false advertising is illegal and a lot of multimeter company's are responsible for this. To those who bash Dave in this video it is dam essential that these company's are held up and exposed for not making a product as advertised.
It is bull
to defend sub par products especially when the safety of peoples lives are involved.
You don't seem to understand how the system works.
Non-governmental IEC publishes electrical standards with occasional revisions. (IEC61010)
Revisions stipulate changes concerning input protection, but also include modifications of the testing procedures, with more stringent requirements to comply with the IEC CAT rating system.
Most countries then adopt those standards revisions as their own, from a specific date, with a grace period for manufacturers' and importers' compliance. (EN61010 for Europe, UL61010 for the US)
That grace period has expired in Europe (October 2013), but not necessarily in other countries (USA January 2018).
Some manufacturers re-submit their products (often with modifications) for independent testing, to confirm new standards compliance.
The meter Dave reviewed was first released under the previous standards, when HRC fuses were not a requirement and current range testing voltage was half of what it is now. A new version of that meter is available, with HRC fuses and revised PCB.
There is no sure way to know if a meter complies fully with regulations, unless it has gone through independent testing. In Europe, a CE marking is mandatory, with EN61010 compliance the responsibility of the manufacturer or in some cases, the importer.