Yeah, the bigger the black hole, the less radiation it emits. A supermassive black hole emits virtually nothing. One with a mass equal to the entire universe would only theoretically emit radiation, but I contend that it would be an immeasurable quantity, and effectively would not exist. Just the same, a proton-mass black hole would evaporate in an immeasurably short timespan, and so effectively would not exist. One might interpret these two immeasurable quantities by saying that proton-mass black holes don't exist or are impossible, and that no measurable matter or energy exists outside a universe-mass black hole, and hence space is also immeasurable and does not exist. The sensitivity of the measuring device might affect this intepretation, but I would suggest that beyond a certain point, no measuring device is possible. I believe the Planck time is one such limit for minimum measurable span of time. Another is the Planck mass, the minimum mass for which gravitational effects can be observed. There are probably other limits.

From what I've read, there are a few different types of black holes. They vary in their bahaviour only somewhat. I didn't bother to get too in depth on the subject. If you want to distinguish between black holes, neutron stars, pulsars, quasars, quark stars, yadda yadda yadda, you really need to get into the small details. I didn't think it was necessary. My hypothesis as it is explains quite a bit. It's a big step to call the universe a big black hole, when all the science community is calling it a big bang, or white hole, or holomovement, or whatever.

Granted I haven't figured out how matter could be uniformly distributed in the interior of a black hole. Why wouldn't there be a singularity of infinite density? Well, maybe when a black hole expands there is a Big Rip effect on its substance. I'm not even sure what a Big Rip is. But I think a Big Bang is just an increase in Schwarzschild radius from collisions & infalling matter. A Big Rip might be electrostatic repulsion, causing the nucleus to explode. Or maybe if the core acts like a giant atomic nucleus it is only stable in the hugely time dilated environment of the event horizon interior. As soon as the density decreases, maybe it fissions, just like a nuclear bomb, with the blown-off debris still trapped in the interior.

Lots of possibilities.