A low RD just means that your published rating is fairly accurate.
It has nothing to do with your playing strength, and isn't "good" or "bad".
But a high RD might just as easily mean that your rating is too low, not too high. It's 50-50.
To use a concrete example, an RD of 200 might mean that my real playing strength is 2550.
...the odds of your 200 RD meaning you are a 2550 is honestly pretty low.
Oh, I agree.
But it works exactly the same way at the low end of the spectrum... it's a bell curve, no?
A low RD just means that your published rating is fairly accurate.
It has nothing to do with your playing strength, and isn't "good" or "bad".