I also don't believe that the Event Horizon of a Black Hole can alter time. A black hole is simply an imploded star with so much gravity it won't allow photons to escape. There is not a person on this rock that knows otherwise. They can do their math all day long and still won't know how the "singularity" basketball appeared out of nowhere to cause the Big Bang.
I believe other than some proven physics, mankind does not have the mental capacity to understand the cause and effect of the Universe. It could be some kid playing with his toys like Men In Black...or a supreme being. Yeah, and then where did it come from and how and when? We'll never know. Have a beer and enjoy life.
They do have to make the time corrections whether you buy it or not. It may be some little known force and not “dimensional” the way kookie sci fi movies BS things but the clocks on our satellites do get out of sync and they adjust for them. It was as predicted by Einstein and the effects are measurable. Still, there is still nothing that says we can’t also follow your sage advice...”have a beer and enjoy life!”
Bottoms up and cheers!(see ya when I get back from A Centauri prime...LOL!)