I'm not sure how I feel about this, but I'm going to try not to judge it before Google get a chance to show what they do with it. Yes, there's a risk that some of these tools will be integrated so tightly with Firebase that they become less useful for those who don't use it, but equally maybe they won't. The Fabric tools never felt like a 100% natural fit at Twitter either, and would they survive the heavily rumoured acquisition by Disney? Who knows. Anyway, I think we have to wait and see what this means for the future of Fabric.
Even if you're not based in the UK, this affects you as you're (probably) selling here and it's a significant market. Yes, this has been caused by Brexit currency fluctuations but the "why" really doesn't matter. 25% is a huge increase and I'd expect this to have a noticeable effect on sales. 🙁