Those beach/saltwater virus strains are bugger all.
What you report does not falsify my hypothesis/suspicion. Only time will tell.
Lockdowns have negative trade-offs that have not really been fairly acknowledged, let alone been objectively measured. That's not being a 'denier' (which I consider a garbage term, no offense).
There are pretty dramatic cultural and demographic differences, to say the least, but my state is roughly comparable to Victoria in population (7.2mil here, maybe 6.5mil there) and configuration (1 major metropolis). The people here are highly compliant with lockdown rules, masking and social distancing (more rural, low-incidence areas less so, of course). Despite that we are being hit hard with a second wave significantly worse than the first in terms of cases/day (peak is ~60% higher so far). Only saving grace, such as it is, the number of deaths/day is no worse than in the first wave and overall mortality has actually been dropping with the increase in the numerator. We humans get a little testy when we can't outsmart little bits of RNA. I suspect that is due to ignorance (in the literal, not pejorative, sense) of this particular virus and faulty assumptions leading to faulty, ineffective policies.
Another interesting wrinkle to this is the near complete disappearance of (diagnosed) influenza this year which remains unexplained.