Right, well, that is a rather small portion of what is an entire book on the subject matter which goes into a lot more depth on the other 360 years as well. But the commenter seems to imply (rather obviously in my opinion) that all I'm basing my statement on is this quote and not the entirety of the book which I linked. There actually is a lot more said about the "later" settlers, that is the european proletariat brought in to replace the non-white workers, but since it's a lot more detailed I couldn't remember a succinct quote.

As for the context in which I made my original comment, the tweet talks about how "almost all of us descended from people fleeing persecution or trying to find a better life", to which the passage I quoted does say:

The mythology of the white masses holds that those early settlers were the poor of England, convicts and workers, who came to North Amerika in search of “freedom” or “a better way of life”. Factually, that’s all nonsense.

This is the mythology the tweet in the post is referencing and hence my comment on it. The rest was to provide context on what the "early" settlers demographic looked like.