just learn instead of reusing and modifying others art it is frowned upon and not encouraged at all/ does not get you better as a game artist doing that
That's not really true. There are hardly any games that use the developer's own art. Most have a team or use assets that are free or purchased. There's nothing wrong with asking. What's wrong is when the assets are used without permission. Don't discourage people from making games just because they don't do their own art.