The debates were all on the other threads (and I don’t think we need to re-run the same arguments):
At the end of the day - they were the only metrics to go off - so they used them 
If people are fullMonzo and are using another legacy bank for cheques, they can continue to do so - I don’t see the harm in Monzo not going forward with it.
I honestly don’t see them ever coming back to it - it isn’t in their interest to - I’d find it hard to see that 10,000s would jump ship completely because of it.
It isn’t that they can’t do it. It is that they don’t want to do it - it isn’t in their vision.