The end result may be innovation, but the delays and rework are just failures. It’s a disturbing trend that we have seen now with the falcon wing doors, the Model X seats, battery modules, Autopilot hardware, etc. Tesla is the common denominator in all these failures not the suppliers. It’s valid to wonder why Tesla keeps failing at getting these innovations to market.
Other companies fail all the time as well. We just aren't told about it. When a new car model year is delayed by a few months, no analyst is asking about it since it is a drop in the bucket for a large car company. The only reason we see Tesla's mistakes up close is that they are a ridiculously followed company (WAY more coverage than any similarly sized company), and their new initiatives have a big impact on the company's prospects.
Every single company makes mistakes. Remember when Amazon started selling dog food 15 years ago? They didn't have the economics worked out and they had to back peddle. Cost them a lot of money. Presumably they learnt a ton from that mistake because they've taken over almost all retail now (or at least it feels like they have).
Tesla recovers remarkably well from every mistake they make. You might even say they learn a lot from their mistakes (imagine that).