Don't like it. Maps and printed time tables allow the rider to plan trips himself in great detail.
I also don't like time tables practically becoming confidential information. We already had that entire mess around reading and using Hafas databases in ways not intended by the publisher. Wouldn't be surprised, if this was meant to be the next step.
What the hell do they think they achieve by making public transport time tables inaccessible to users?
That said, I don't think the impact for the average user will be massive. As long as the connection search engine is decent, that is.
And it's ridiculous in how many places you would be forced to use garbage user interfaces, if it wasn't for Öffi.
At least it apparently takes some massive effort to screw up Dijkstra and A*, so the backends usually return decent results.