We manually checked a few of your posts randomly to look for signs of machine-generated fraud.
Then we also ran it through our tools to double-check.
You only added some own text in the intro and the end of these posts to give a pretence of originality. Some posts have a sentence or two added in the middle for further confusion. The rest of the texts are machine-generated (between 80-90% of these posts).

@welshstacker/alternative-financial-investments-should-the-value-of-currency-collapse

@welshstacker/why-is-a-well-thought-out-portfolio-important-for-cryptocurrencies

@welshstacker/the-impact-of-quantitative-easing-on-the-economy-exploring-how-central-banks-asset-buying-program-designed-to-stimulate-economic