You can't see stuff falling into a black hole. That is inferred too. You can see jets moving AWAY from where a black hole is inferred, which seems to contradict the way black holes are supposed to work.

Black hoes and neutron stars are inferred. You can't see a black hole by definition.

Fatal flaws have never stopped the Big Bang. (1) Redshifts suggested galaxies moving faster than the speed of light, so inflation and cosmological redshifts were invented (2) Then galaxy rotation curves disobeyed gravity, so dark matter was invented (3) Then inflation was re-invented with dark energy (4) Not to mention invisible black holes and neutron stars.

How many elephants in the room can fit through the eye of the needle?