my first job ever did this. qa and customer support were combined which made it the best place to learn all the ins and outs of a very complicated product. after 3-6 months i had excellent knowledge of how the product actually functioned on the ground and how the customers approached it.

highly recommended as a training scheme! especially in cases where engineers have a lot of influence on product design.

(although, in a high volume ticket oriented environment, or a highly structured testing environment, the benefits fall off dramatically. the big value was setting things up from scratch in different contexts and seeing where people struggled)

It's Automattic, not wordpress.

It is also not measured in months.

Rotations into Support (for a week IIRC) once a year used to happen as it was deemed important, until the day it was no longer important and was stopped.

Johnson Controls (they make automotive interiors among other things), has every employee work on the production line for their first two weeks. Even the CEO.