Agreed that changing a UA is definitely the easier short term solution.
The downside is that in the long run, you’re signalling to a consumer-hostile business that you’re happy for them to continue to be hostile towards you.
When dealing with duopolies, pragmatic solutions are all there are. When dealing with highly competitive marketplaces, ‘pragmatism’ and ‘laziness’ can often overlap in both positive and negative ways.
A positive pragmatic lazy solution I found to consolidate all the different registrars I used was to use Hover’s transfer-in concierge service. Of course, this now means giving money to Tucows instead, but they offend me less than GD.
Changing your domain provider usually involves finding a new provider, evaluating it, setting up payments, moving a bunch of records and so on.
I know what I'd do unless I was already planning on changing my domain management.