I don't understand how someone investing their life savings in their own home trusts advice on a web site that reviews Toasters, electric bikes and TVs it's not that you can send back your new build after complaining to consumer protection.
Same can be said with the green shed site, you don't see homebuilding posts next to "How to build a Chook Shed"
There's a credibility problem can't you see it?
What would you suggest as an alternative to getting feedback on a builder? Most won't have any online reviews or other customers on forums like this so I personally find it a good starting point. I also discuss it in Facebook groups with others that have built. A builder can give a number of references but they would never give people who won't have good things to say.