is there a way to macro greed this loot?

[Niwashi]

I am also bamboozled at the idea of someone only ever running using M1+M2 held together.
That's an interesting choice for movement.

It's a choice that gives you analog control over your direction. I do it too on the rare occasions that I play on PC, where I only have a keyboard and mouse set up. Mouse movement isn't as good as a controller, but it's a thousand times better than trying to trying to navigate a twisting path using just the keyboard's straight line movements. (But I really don't see how --or why-- anyone would attempt non-trivial content without a controller.)