Best Website Ideas To Make Money?

Nitpicking means picking on incorrect details of how something was said, while missing the larger point that was clearly meant. You're the one who did that, in order to defend a well intended but wrong piece of advice.

"Lived" didn't pick on small details or linguistic errors and avoid your larger points. It seems you threw the term back at him/her, because you think "nitpicking" means the same thing as "contradicting". But it doesn't, and rather than nitpicking, "lived" addressed your 3 main points head on:

1) That the OP needs to stop focusing on making money for themselves, and instead focus on providing the most value to others.

2) That their income would be in proportion to how much value they provide.

3) That in order to determine how to provide this value, they should figure out what they are an expert in.

Then you nitpicked:

In contradicting point #3, "Lived" made the claim "You don't have to be an expert in jack sh*t to make money.", followed by the contradictory claim: "You have to be an expert in marketing."

You seized on the contradiction, which really misses the point; obviously "Lived" believes that one needs to develop some marketing expertise, and said so, not bothering to say "the exception is", but which implication was obvious to an honest observer.

What was being refuted is the idea that the OP needs to determine what to bring to the market, by asking themselves "what sites can [I] build that provide the most value to people...what [am I] an expert in?"

That larger point, which is clearly what was intended, stands, and you avoided dealing with it, probably because you sense that it's true.

On the other points, your defense was less nitpicking, and more just restating the wrong points you made in the first place, with no evidence:

"Products/services provide value, or else they would not sell, so yes, how much money you make is in proportion to the value you provide the customer, whether or not that product is your own.".

Even if we accept the first falsehood (perceived value is not actual value, and garbage marketed widely and well, sells by the billions; witness Micky Dee); the "money...in proportion to the value" part doesn't follow at all.

The statement ignores the marketing part, which is the strongest factor in determining success. One of Dan Kennedy's famous contributions to marketing, is his insistence that most business people could make a lot more money if they understood that whether you're a plumber, artist, pizza maker, landscaper, or internet marketing hotshot, you aren't in the business of doing your thing; you are in the business of marketing your thing. In other words, by concentrating mainly on providing the best whatever it is they bring to the market, they get it wrong. Your advice is exactly what Kennedy warns against; focusing on the thing itself, rather than the marketing of it. If falls in the category of "if you build it, they will come and buy it".

Kennedy is also known for repeating the insight: (paraphrased) "a mediocre product with great marketing will always beat a great product with mediocre marketing", contradicting your article of faith once again.