If the end result is, and you’re doing games, they might

Edit to add to my sibling comment:

> But some abstractions which makes standard stuff easy, makes non-standard stuff impossible.

I swear that at some point i could tell a game was made in Unity based on the overall look of the screenshots. I didn't know it's the fault of the default shaders, but they all looked samey.

Since games are all about artistic expression and entertainment, I would say yes, it matters to the end users. The thing is, if you don't have your hand in the code details you might not know the directions it can be taken (and which it cannot). Seeing the possibility of the code is one way to get the creativity juices flowing for a game programmer. Just look at old games, which demonstrate extreme creativity even on the limits put on the software by the old hardware. But being stuck into the code, seeing the technical possibilities allowed this.

I think this is what the comment above was lamenting about abstractions. I am all for abstraction when it comes to being productive. And I think new abstractions open new possibilities some times! But some abstractions which makes standard stuff easy, makes non-standard stuff impossible.