So, what do you think is the greatest hurdle for new bitcoiners entering the space?

People don't getting that it's not how you present a message but what is the message.

He may be a very mean person and it sucks but it doesn't mean he's wrong.

But I have to admit, you kind of said the same yourself:

His guides would be super useful to noobs,

but the rest does not really matter:

but the grammar sucks and stops any noob from reading past the first paragraph.