Low income = Low wealth
As north is to south and black is to white, money belief 2 is directly opposite to money belief 1.
They are related while being at opposite ends of the same stick.
In the same way as high income may not lead to high wealth, there are many low income earners who have created much wealth. Therefore, equating a low income with low wealth is a belief, not a truth.
Often, low income earners are more effective with the income they generate than high income earners. However, if the belief is that low income means low wealth, the effectiveness will be restricted.
With vision, purpose and desire, a person with a low income can build much wealth over their lifetime.