The irony here is that all Buddhists abandoned so-called “early Buddhism” over 2000 years ago. That’s why we have to reconstruct it from texts. “Early Buddhism” didn’t exist as a category until we invented it. The real question here is, why did you all feel the need to invent it. What was so very dissatisfying with modern Buddhism that necessitated this project?
The other irony is that those texts you rely on to reconstruct “early Buddhism” don’t actually reflect early Buddhism. Early Buddhism died out before writing was used in India. Pali texts are the Mahavihāra version of Theravāda Buddhism from the 5th century. The oldest Pali manuscript in existence is also from the 5th century. And the idea that Pali was written down earlier is also first attested in the 5th century.
The Gāndhārī corpus is not a canon, and includes numerous Mahāyāna texts. The oldest Prajñāpāramitā manuscript is from the 1st century CE, some 300-400 years older than the oldest Pali text. Similarly for the oldest translations into Chinese: a mixed bag (often poorly distinguished in terms of well known Buddhist categories), not a canon, and not consistent with the views of the Mahāvihāra.
“Early Buddhism” as we know it now, is an invention of 19th century Europe. Before this, no oriental Buddhists were concerned with or interested in “Early Buddhism” because all Buddhists believed themselves to already be practicing the most authentic form of Buddhism available. Oriental Buddhists had faith. It’s Europeans who lack faith and constantly seek out more authentic teachings.
Think about what question “neo-early-Buddhism” is an answer to. Since it is a doctrine of authenticity and authority, neo-early Buddhism, has to be seen as the answer to a perceived lack of authenticity amongst modern Buddhists and a perceived lack of authority in modern Buddhist teaching.
The desire to reconstruct neo-early Buddhism and to adapt one’s practice in the light of what one reconstructs, is an admission that Buddhism as presented doesn’t make sense or doesn’t work for you. At least not enough to make you content with your practice.
I mean, if you were making any kind of progress on the path, you would not be falling over yourselves to reinvent Buddhism. Right? You would be like an oriental Buddhist, content to get on with your practice, rather than arguing about what words mean. I note there is no consensus on most of the issues raised in this forum.
It would be more interesting to see people offering up their personal rationales for why we need neo-early Buddhism at all. What is wrong with modern Buddhism that we feel the need to abandon it for something else? Or is it simply that the grass is always greener on the other side?