Good points. But also keep in mind we are seeing things that are often hidden til a company chooses to reveal the final or near final iteration of a product prior to release.
Prototyping is a process where we only usually get the odd glympse due to leaked photos or info.
Now with the ever changing nature of business we may see more of this process; if business sees positive flow created by involving backers/investors in the process.
Without Mistakes; there is very little opportunites to learn & grow.