This is the attitude that just makes the whole field a piece of shit to engage with.
"No" - Try writing an explanation. Words are free. If you've chosen to engage with negative cynicism and consider yourself an expert in the field, you have a duty to explain your damned position instead of a "no"
"We aren't falling into a black hole" - You say this with what level of certainty? Are gravitational effects of the galactic center so insignificant at our location? The images of galaxies would suggest otherwise.
"Accepted theory" can kiss my ass for all its worth. If we went with accepted theory through history, i don't have to tell you the kind of seemingly obvious mistaken beliefs we've held.