That’s totally valid and something we would even encourage! This project is for researchers so if there is a point where the abstraction is no longer useful, by all means configure, or subclass, or copy code.
Of course. And they're not saying they don't have a place.
They're saying why does it matter if it's 50 vs 60 or even 100. It's a wrapper, which should be less lines. That's the whole point. Abstracting things even further and making assumptions.
Of course you can use them. Of course you can remove them after and use the underlying code. But the LOC shouldn't be the important part of it