It is, quite frankly, laughable that anyone uses RT or DLSS as a factor in their buying purchases given the almost universal lack of support for games when they launch. Months down the road you "might" get a patch to enable these features. Jensen Huang is a con-artist who convinced people that these features would be relevant during the lifespan of the first generation RTX cards back in August 2018. Which clearly they aren't unless you replay games just to look at shiny reflections in one of the handful of games that are supported.
The 5600XT and the 2060 are about as dead even as they come in terms of rasterized performance and power draw. The lowest rung 1st gen RTX card is going to be about as useful as a non-RTX card in the future.
There are plenty of reasons to NOT buy a 5600XT. The vanilla 5700 cost difference (usually not much on sale) and performance difference (somewhat significant) are the biggest reasons IMO.
If the cards are just about identical performance, why wouldn't you choose the one with a much better and modern feature set?