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Sariaht, please do not reduce this to a swearing contest. If you are unable to modify your attitude, this thread will be locked.
The most important point to realize is that the equation you used is an extremely specialised equation for situations where "surface area" is defined in extremely specialised terms. You cannot throw it out randomly, without any theoretical justification. The equation you used has simply no physical significance in almost all cases. The special circumstance of a black hole is not due to its mass, but its great density, which makes the determination of the normal idea of surface area impossible. In a "singularity" model of a black hole, the standard surface area value is 0.
The most important point to realize is that the equation you used is an extremely specialised equation for situations where "surface area" is defined in extremely specialised terms. You cannot throw it out randomly, without any theoretical justification. The equation you used has simply no physical significance in almost all cases. The special circumstance of a black hole is not due to its mass, but its great density, which makes the determination of the normal idea of surface area impossible. In a "singularity" model of a black hole, the standard surface area value is 0.