A *lot* of care is required when discussing black holes. A lot depends on the observer, so it is important to state which observer is doing the measurements.<quoted text> Something hovers on the edge , they say forever.
Not sure about forever, but they say it can never go in.
So, let's set up an experiment: two observers, one stays at a 'fixed distance' from the black hole and the other falls in. Both have clocks that emit a signal at regular intervals (according to the local frame of reference). All will be analyzed using general relativity (quantum aspects are not relevant at this point). Let's also assume a supermassive black hole like that at the center of the Milky Way galaxy.
The 'outside' observer sees the other as falling inward with a signal that is red-shifted more and more and taking longer and longer to for the clock to 'tick'. Eventually, there is a 'last click' that is very red-shifted but that comes from just before the event horizon. A very good telescope would continue see a very red-shifted image of the falling twin just outside the event horizon.
The falling observer, on the other hand, has no issues and passes through the event horizon with little trouble. For a supermassive black hole the curvature at the event horizon is not that large and the tidal forces are survivable even for humans. Unfortunately, as this observer falls more, the curvature increases and s/he is pulled apart by tidal forces before reaching the 'center' of the black hole. This part is not seen at all by the outside observer.