Well, building car is hardly something that hasn't been done before. They seem to be suffering from extreme NIH caused by the illusion that 100% of the stuff they do has never been done before/need disruption.
That is based on the reports suggesting that Tesla is not failing with its electric powertrain, rather it is failing in traditional part of the car assembly which is sad because the experience in those area are massive, locally and abroad.
So basically, "Is that a bad thing?" Yes, if what I say is true, because it eats the lead that Tesla has to provide no specific benefit. No, if either indeed, there is a hard, never done before, and currently unknown ingredient to Tesla that is going to increase their lead once they get it right.
Or No, because, well competitors are starting to get on the market and Tesla slowing down a bit give them time to catch meaning a more competitive landscape, which is good for everyone on the consumer side.