I don't think so, but it's a whole - one problem with GR and QM is that GR assumes you can know the exact position of ... well, stuff... in spacetime and QM emphatically says you cannot.
GR seems to be an incredibly accurate approximation. Only when we get to the Planck scale does this accuracy break down. It of course doesn't mean GR is wrong, just that it is yet to incorporate QM.

But there must be a way for GR and QM to unite. The universe is proof of that.

I'm wondering if there are other ways to probe such a small distance, like perhaps gravity waves.
Maybe, though it seems the necessary measurement accuracy is ridiculous and well beyond what we can hope for any time soon, if ever.

Gravity waves propagate at the speed of light. That kinda implies that these waves behave similar to light. Gravity waves are a form of energy, just like light, and so maybe they're the same thing at the fundamental level. Maybe gravity waves are photons. If so, then gravity waves aren't helping us any more than light.

I wonder how close the 2 black holes ina merger get before they merge into a single entity.
We've talked about this before. I'm unconvinced any such merger actually happens. I'm inclined to think they basically orbit each other forever at the speed of light (or close to). How do two singularities collide? Of course this is based on nothing more than a sense of intuition, which is kinda ridiculous in these extreme conditions, but if a singularity takes up precisely zero volume, then no such collision seems possible. Rather, they continuously miss each other.

The factor of 2 pi comes from making an arbitrary choice of whether you choose h as a "fundamental" constant or of you choose h_bar as one.
Ok, I don't get any of this to be honest. I don't understand why there's debate about which of these values is "right". The Planck constant is derived from the relationship between photons and energy. The Planck length is derived from this constant. idk why there would be two possible values. But the Planck constant is... constant.

I saw that. I freaking love Steve Mould's YouTube channel.
I really like Steve Mould. He has the glazed look of a man that has enjoyed his life. I suspect he used to have a cocaine problem. There's something about him that makes him... interesting? idk, I don't intend to glorify cocaine use, but he looks like he's partied at university, let's just say that.

Veritasium, on the other hand, is clean as a whistle.