Are there any positives/negatives in this rejection email ? or, it is just a desk rejection?
This is a desk rejection. There's not much more to say about it - I suppose you could say that they haven't outright said your paper is incorrect, which is a positive; on the other hand they did also say that they are not considering your paper and you should submit elsewhere, which is effectively the same as rejection and certainly a negative thing.
There's nothing to do but submit elsewhere.