This is the official info:
It is pretty clear that COVID is disrupting visa grants. From official sources, not rumours.
I have seen people saying "not to worry, your visa will soon be granted". They are not Official statements, and have become the rumours.
People with special circumstances are getting visas. Quite a number of 309 applicants, with compelling circumstances, are actually going direct to the subclass 100 permanent visa much faster than normal, probably processed in Australia, rather than the overseas local office.
Your comment that "the Australian government is hostile without compassion towards foreign partners of Australian citizens" is plain wrong.
Applicants without compelling circumstances, ie: just the normal separation that most applicants go through, are still having to wait as normal, for their local office to finalise their case. COVID is obviously causing issues for these, along with issues for many other people in the world, including Australians in Australia.
Many people have to wait until this is all over, until they can meet their relatives again, and this includes Australians in Australia, due to State lockdowns, with few exemptions for Australians.