As so many fans are so fond of pointing out, the Asgardians in the MCU are not actually gods, but rather a super-advanced alien race. Their "magic" is merely technology, their lives are limited. Any worship of them as divine beings is either a mistake (e.g. Odin) or a deception (e.g. Loki). I have discussed how I feel about this, but sadly, the matter has been settled.
And yet, that's not always how it is. The comic book Thor seems to be a genuine god, at least he was during the God Butcher arc, which revolves entirely around gods and their godly nature. No mention is made of technology or advanced aliens, and numerous mentions are made of "godly" factors such as reliance on worship, etc, not to mention godly feats, like being tossed straight through a moon and coming out the other side. There are also numerous physical distinctions, such as "godblood" being a material discernible from mortal blood.
And anyone who has read that arc knows that if the gods were merely highly advanced mortals, Gorr would have brought that up.
So I'm wondering, when did this van-Daniken-esque take on Thor begin? Was it an invention of the MCU, or is there precedent in the comics? Is this an Ultimate/616 split, or do different writers interpret it differently within the same universe?