on his website he has like these long webdiary pages about how he decided to go to grad school as a middle-aged guy and immediately started trying to prove GR wrong, and his advisors kept debunking him and he refused to give up so they kept sending him to more and more experts who explained super clearly why he was wrong and he still insisted he was right so they kicked him out.
http://www.sjcrothers.plasmaresources.com/PhD.htmlhere is where his coffin gets nailed to death by a GR prof named MacCallum
>Abrams has argued that we should stick to Schwarzschild's original radial coordinate and regard r=2m as a point. Its strange features (that spheres around it have limiting area 16\pi m^2, radial geodesics approaching it stay a finite distance apart etc) apparently cause him no problems. However, it's quite a revealing exercise to cut a sphere out of flat space, lay down coordinates on the rest with a rdial coordinate vanishing on the sphere, and treat that origin as a point - one gets the same pathologies. In other words, Schwarzschild's original coordinates implicitly take a whole sphere and topologically identify it to a point and this is reproducible with flat Euclidean space. Abrams seems not to accept that most people, if given the flat space in the funny form, would happily reverse the identification and restore the sphere, just as we now do in understanding black holes.so basically crothers whole argument was about looking at these Abrams/Schwarzschield coordinates which have a removable coordinate singularity at the schwarzschild radius (it maps all the points of the surface to one point). his pseud argument is that this means it is a point, even though it got explained to him that if you try to construct a surface around that point then it turns out that it's a sphere that has a minimum area larger than zero (in other words GR is telling you that it's not a point since there should be no minimum size to a sphere around a point)