I had not thought of that before, but it makes sense ...
I'll post my thoughts so far here. They may or may not be useful - I hope so.
It looks like blockladder has deleted posts he made in the past. A Google search shows up the odd quoted post for which the original has been deleted. It's hard to tell whether these are sarcastic or trolly. Either way, I've hit a dead end. Here's what I've assumed so far. Some of these assumptions could be false, of course.
Thoughts/Assumptions
1) Why The Comb... is poor grammar (it should be Why Does The Comb...). I assume this is deliberate (OP appears to have native English), and that ONLY these letters are required.
2) I assume its an anagram of the question for that reason.
3) The .txt is difficult; it could be part of the answer, or could simply indicate that the answer is plaintext. Including txt increases the proportion of consonants to a problematic level.
4) I assume that the 8 camel case words are to be hashed (SHA256) to create a 32-byte privkey. It is technically possible that the 8 words ARE the key. However, this would require that several letters were discarded (as the question contains too many), and there is no obvious indication of which ones.
5) Natasha Otomoski is an anagram of Satoshi Nakamoto. The letters were clearly grouped to indicate this, so I assume Satoshi Nakamoto is a part of the answer. This massively reduces possible permutations for 8 words. If it is not, and is simply deliberately misleading, it becomes vastly more difficult to figure out the answer.
6) There may be a second layer in the puzzle, whereby the answer references something in the question rather than just using its letters. Why
.? implies an answer Because... (the right letters arent present though) or To... I spent a while considering the joke, What has teeth but cannot chew. Answer: A comb. ToChewThe21MbyteHashOfSatoshiNakamoto doesnt hash to the given address.
7) The significance of 21 (or 12, or 1 and 2 separately) in the answer is unclear. The letters arent present for 21 Million bitcoins, though they are for 21m Btc.

A rail fence cipher doesnt appear to produce anything useful.
That's all from me. It felt I was getting close. Assuming there
is a solution, I hope this helps someone find it.