Do you have a source or have other info on this? I have a G Suite Non-Profit account and while it says the "my drive" had 30 GB of storage, the non-profit license also grants us "shared drives" which grant unlimited storage but only in those shared drives. I was wondering if the 1 TB limit is a similar situation.
As a side-note, Drive File Stream messes up uploading big files/folders due to this: https://support.google.com/nonprofits/thread/13880126?hl=en