Why does dbt clone have to follow DAG order?

[SPTKL]

I notice that dbt clone follows the DAG order, is this necessary? Would love to have a dbt clone flag that would clone everything out of order in parallel.
For my specific dbt dag, I set the thread for dbt clone to be 30, however, because of the shape of the dag, sometimes I would be waiting on e.g. 2 models to clone before cloning the downstream 10 models. So I basically have a choke point in my dag. This makes my dbt clone operation take a very long time, however, If clone is parallel out of dag order, I wouldn't have this issue.