I'll try to compile the arguments for and against I found in that thread. Credit to Matt and Ant for most of the points.
Arguments FOR
- It is very much a legit black hole.
- Extreme energy generating a mass of gravity
- Light can't escape it
- Special Beam Cannon bends when fired because of the black hole's gravity
wishing for black holes to be 100% identical to real life science is hilarious and puts ridiculous pressures on fictional settings. You're basically going to say that a black hole is false everytime it doesn't act like you want it to act: I.e, being 100% destructive and nothing can resist it.
- The DBS Black Hole has a lot of real life properties. People just tend to say that Black Holes in fiction "Don't behave at all like black holes" every time there's a black hole feat automatically.
Ever thoughts that in real life black Holes destroy everything because nothing has the durability to resist them? Or resistance to matter manipulation.
As for being unquantifiable, you can literally calculate the energy necessary to create a Black Hole, and to make a Black Hole collapse (And thus, to survive the collapsing if you are inside the black hole. This points at Black Holes being very much quantifiable.
- The Author clearly intended it to be a black hole. Wishing for black holes to be 100% identical to real life science is quite frankly absurd.
Arguments AGAINST
- It looked like a heart
- It did not suck Goku, 18, and 17 towards it, but rather increased gravity outwards from itself. A black hole sucks in matter towards itself to destroy it in a singularity. It does not increase gravity in another direction
- The Schwarzschild radius can be used for calculating the creation of legitimate black holes, but they do not collapse in this manner in the real world. The singularity simply destroys everything."
This is what I got so far, there are probably more arguments for both sides but that's what I found in that thread lol