That's your own personal experience. I don't buy junk and if I would repeat that experiment, it's very likely that I'd pick up, e.g. Fluke multimeter or some old iPhone I'm keeping around.
My example has nothing to do with what you personally buy, and instead with "what is Made in China" in a local market. I am referring to both reality, and perception.
If you have millions upon millions of products, and only a tiny, tiny, tiny number are of OK quality, then it's entirely fair to say "Made in China" is junk. That's how it works. Exceptions to the rule are simply that, and not relevant.
If a company makes fridges, and 1 model out of 100 are OK, the other 99 crap that breaks in 2 to 3 years, everyone would say "That company makes junk!". Referencing "But they made one good fridge once!" is not something anyone need care about, and is the exception to the rule.
Yet with Made in China, we're talking about a million junky, sub-par products, compared to 1 that may be acceptable. And even then, quality control is still an issue.
Made in China is junk, an entirely fair, reasonable, logical statement, predicated upon the reality of the situation for most people.
Even if true, irrelevant, because for the rest of the wotld, my statements stand true.
Put another way, let's say I put all Made in China products I can buy in Canada, into a room. Millions of them, surely.
Now I am to pick a product at random. Will it be junk? Yes. Out of those millions and millions of products, maybe 10 or 20 wouldn't be junk.
Everyone knows this, because it's true. It doesn't matter why, for what reason, all that matters is that it's true.