So when I left this thread it was on page 25 - apologies for not reading the other 70 pages before posting again!
In some ways I am exactly the kind of person BA wants to get rid of - QR flights ex Oslo for 560 Tier Points (especially pre pandemic) and if I said to people at work I am flying to Newcastle the normal response was "presumably via Baku, Cape Town, New York and Amsterdam".
I suspect we will all now be playing a giant game of chicken with BA. My son has a BA Platinum Plus Amex and has said he will likely change it to a different card that earns Amex points which are more flexible. He is also going to convert his 100K Avios to Nectar Points. Would love to be a fly on the wall if BA had a few billion Avios convert to Nectar points with people having a "hissy fit".
I fully expect a lot more "spend £X on Amex and get Y Tier point" offers - especially if a lot of people start cancelling the Amex card.
We will see.