

That is not how a bastard works. To be clear, all of this is archaic, I’m not actually calling anybody a bastard, but the definition of bastard is “a child born to parents who are not married to each other.” He matches that definition because his parents were never married.
Affairs don’t come into it, it’s just some old bullshit cultural and religious ideals about which types of relationships (just the one: heterosexual marriages) children are “supposed” to be born into.
The for-profit childcare system in Australia is profoundly broken. They’re chronically understaffed and the pay is awful to boot, so there’s tons of burnout and staff turnaround as people move around trying to get hours at different locations, etc. I don’t know that 27 different gigs over a decade is actually that unusual in the sector.
If you’re interested, ABC News Australia did an article on it:
Fair warning, there are some pretty unpleasant descriptions in the article of things that have been done to kids in the system.