Anyone with a basic knowledge of maths can see that L&P underestimated the timeframe of his project. You don't have to be a game developer to understand that. Especially because the way L&P is programming is quite simple (just a very very long spaghetti code).The problem with AWAM, first of all, is that L&P is criticized and told what needs to be done, not by those people who have their own experience of creating games, but by those who consider themselves smarter than others.
Also, It is important to recognise that L&P has no finished project to show. If there were two or three finished games, then you could say that L&P really knows how to finish something like that. But there are not. One thing is clear: The remaining development time needs to be reduced to an at least halfway reasonable level for the project to have a realistic chance of ever being completed. As long as that doesn't happen, there will always be people who point out that something is wrong.