Same concept as ‘natural’ makeup: while it’s obvious that there’s polish if you know what nail polish looks like, it just looks like better looking natural nails to the untrained eye. It’s just base coat and matte top coat. It’s become my go-to for when I’m not feeling any colour or design. Looks better than my naked nails and I get the benefit of having them protected from water, so they don’t split as much.
There is some truth to both. There were some problems with companies using lower quality ingredients for products for the Czech market, because a lot of Czech people prefer low cost to quality (for understandable reasons). And as for Polish products, there are things in recent memory like the edible product that used technical salt instead of kitchen salt - that makes people wary, you know.