What is required for a proper boost chainline on a 1x drivetrain - only a boost chainring or an entire crankset?
Answer: The entire boost system has to be used with all the pieces together to have a proper chainline 53 mm to my taste.  

I've already had a boost hub, and a non boost entire crankset. At the end of the first month the chain touched the frame. On a race I confirmed a noisy chain, and finally had some missed shifts (twice). 

Exactly what I have been searching for 3 weeks now, and found that as SRAM and one up moves the just chainring, and Shimano offer change the crankarms.