To be fair to GF, their new entry-level Balancier 3 has several sharp interior angles. They have emphasized that twice in their own weblink and they are very visible in stock images (comparatively, sharp interior angles were not mentioned at all in the Sē and Double Balancier links). Maybe they have heard and reacted to feedbacks from collectors:
https://greubelforsey.com/en/watches/balancier-3
"
All these bridges feature Greubel Forsey’s signature hand finishes: a curved polished surface, polished bevels and hand-polished screws. Each bridge includes its share of sharp internal angles and a curved profile that make the hand finishes particularly complex—details that will certainly be appreciated by collectors."
&
"
And finally, the finishing. The wide bridge supporting the hour and minute hands is the best illustration of this. With its curved, three-dimensional, openworked design, multiple levels, numerous sharp internal angles, and refined arm connecting with the small seconds, it is a true tour de force."
That's a good effort and I look forward to their new releases under the new management.