In Brazil, electrical connections are almost always done splicing electrical cables by twisting the strands together and insulating them with electrical tape. Here is a video showing some of the connections the way they are done in Brazil. Terminal blocks are only used on some specific applications and wire-nuts are nonexistent here.
Here on DIY.StackExchange and elsewhere, I've seen criticism of that method and statements that wire-nuts are the way to go.
Is a stranded cable connection, twisted and taped as shown in the video, objectively any better or worse than wire-nuts/terminal blocks?
Best Answer
Splice connectors such as US-style wirenuts and UK style terminal blocks are demonstrably better in nearly every way to the twist-and-tape method you describe.
So why are wirenuts not more common everywhere? Cultural bias and intertia. For example, wirenuts are not commonly used in the UK because an early wirenut product in the UK market had a design flaw and frequently failed, spoiling the reputation of the product. Terminal blocks became the standard by default. Because of this history, wirenuts are seen as inferior in the UK, when they are empirically not. They are just different than the commonly used terminal block.
I would argue the same is true for twist-and-tape joints in Brazil: it's how it was done in the past, and anything different is strange and therefore must be wrong. The only difference is that, at least for household wiring, wirenuts and terminal block are empirically superior to twist-and-tape splices.