Is that your opinion?
OK, ahem...
I suppose it depends on how the "opinion" is derived. And even if it is wrong, there's usually plenty of "source material" to back it up. So you often can't refute these things unless you really know what you're talking about. Case-in-point is the "petrodollar theory" - mostly promulgated by people with extreme political tendencies and who do not let lack of knowledge hold them back from opining. There's plenty of research on line backing it up - all of it completely
wrong.
Quick edit to provide an example.
Part of the theory is that other countries have to buy dollars in order to buy oil and that causes the dollar to stay strong. So Americans are terrified of anybody that threatens to take Euros for oil because that will sink the dollar and flush the entire US economy down the toilet.
**
However, other countries DO NOT buy US dollars to purchase their oil - they enter into electronic eurodollar contracts that are already domiciled outside the US. Here's something that should tip the petrodollar fools off that they're wrong: with oil selling at about 5 times what it sold for per barrel compared to 2001, one would think that other countries would have to buy 5 times more dollars to buy their oil. This would obviously sink every currency relative to USD. But look what's actually happened: USD is at historic lows against most of the major currencies - GBP, EUR, JPY, NZD, etc. See the disconnect?
Like they say, mathematics are not an opinion...