Why notate 12/8 as 4/4 and fill it with triplets?

I was listening to Keine Lust, by Rammstein, and looked for the bass tablature and didn't understand why it was notated in 4/4 with every quarter note subdivided in triplets, instead of just using 12/8 from the get go.

Another score in MuseScore had it as 4/4 with the half-notes subdivided into sextuplets.

This isn't the first time I've noticed this, but I can't remember of other cases right now. But it's enough for me to notice it's not an isolated case.

Is it a "reads easier" thing? Is there something more to it?