All of these diseases are either much less infectious than Covid or much less dangerous, or both.

> I see, so you are claiming that governments in Australia have always dealt with infectious diseases using oppression?

Ignoring for the moment the prerogative term "oppression", using the rule of law to stop the spread of hazards is pretty common.

In South Australia we've had to throw put fresh fruit when bringing it from interstate because of the risk of fruit fly infection, and there are currently strong restrictions stopping movement of fruit between postcodes because of an outbreak, eg: https://fruitfly.sa.gov.au/outbreak-restrictions/red-area

This is a restriction on movement of potential infection vectors. SA remains free of Covid, and until we can get our vaccination rate up I'd prefer to have this restriction than a lockdown.