I took the extract from the financial highlights 2021 report.
It wasn’t really intended by Motability for it to be known by us customers at this point in time as @Rene ‘s post confirms after a web chat with Motability.
So it isn’t really known whether Motability intend to carry it on after 2022 or the real reason for it or if it a this year only thing.
The full financial report is also available by clicking the link in the original post and then clicking ‘financial reports’ tab, it is 154 pages long though ? might be something in there.