Just off the top of my head, here's some of the "frustration" I recall from recent threads:
'I started a channel five days ago and have only three subscribers.'
'I listed 20 items two days ago and got no sales.'
'I bought PBN links and didn't get any traffic SEO is dead.'
Internet marketing is not a magical ATM dispensing free money, it's a business, with all the effort and investment that's typically required of any business.
If you have spent three to six months of real effort on a single method, with no results, you have every right to be frustrated. But I think it's clear OP was addressing the ATM mindset, not those who put in real effort with no results.