First Direct recently stopped working for my keyboard (OpenBoard) and so I have to temporarily specify gboard while I do banking. One trouble with FD is that they are a subsidiary of HSBC and I think get what they're given by the inscrutable parent. Having said that, I did call them about the keyboard and the guy was sympathetic, noted the two fDroid sourced keyboards I mentioned and said he'd raise it.

The other trouble is, along with open Androids, it's a tiny part of their customer base and it's so much easier to say no and just cater for the main base. I'd switch to Graphene, but for that!