This is wrong, please stop spreading this misinformation.
It probably differs from country to country, but in Germany, for example, between 38-48% of plastic is recycled (source). Sure, that‘s far from all of it, but still far, far better than nothing. Falsely claiming that recycling is mostly a scam and, by that, implying that it doesn‘t make sense to try to recycle you trash, is a horrible idea and only makes the situation worse.