automatically copy steam's "short" game description into giveaway description?

Or you could just enter wishlisted (+maybe recommended) giveaways, that's what I do most of the time.

Won’t ever happen. Do you own research by clicking on the store link.
For me, the game descriptions are hardly ever the decider on whether I buy a game. They are often horrible or too vague to help me make a decision on the game without also looking at the videos and images, even reviews.

best off just looking at the store page, the little brief description is completely unused for deciding if I have interest in a game.

watch the trailers, look at the screenshots, read some of the reviews(negative and positive!), look at the community hub

I don't like it because everyone would get used to this text being in the giveaway descriptions and then people would stop reading the descriptions. When a giveaway creator has something useful they want to put in the description, nobody is going to read it.

If I am entering for a game, I already know what that game is and don't need the description on the giveaway page. If I don't know what the game is, I want to open the Steam page to learn more about the game and need to see tags, review score, and the game trailer. I personally think the game description on the giveaway page would feel like spam or unneeded clutter.