Yeah, it's a problem, and i can't believe apple put out a laptop with the new type-C port, that doesn't support thunderbolt.
A selling point for Apple (they made a big deal about it) was that when USB 3 was new (back in 2011), ALL the ports on the macbook pro were the same and supported it. There was no confusion about which port to use, what supports what, etc.
And then they went and did that with the 12" macbook! Same shape port as the other macs. Totally different functionality!