And absolutely needlessly so. You can ship a fully compliant USB-C 3.1 cable for probably 40 cents more than a cheap version. It makes no sense to start a rollout this way, especially from a company like Apple.
You're talking about the company that no longer ships power cables with a little plastic clip to keep them tidy and now sells the extended lead as an extra, both of which have been in every one of their laptop chargers for 15 years+