When compounded over time 11% can be a very high cut to take. I think it's too much. Also, consider that it's also a 50/50 split in the rewards.
I think the main point is why are they taking 11% cut? Maybe they've said the reason why before, maybe they've not. But this new post of yours will allow us to know why. Hopefully, there's a sound reason behind it. 3speak has a great team behind it and they're doing incredible work.
If you're somebody who posts 100% of their Hive content to 3Speak, that 11% becomes a lot more noticeable.
I'm sure there is some reason behind this decision, just not 100% sure exactly what that is yet. I do think their team has the community in mind always, so I know it's nothing malicious... maybe just an afterthought at present time.