Where are you getting the information that Australia is "very easy" to immigrate to as a tech person? That is not my experience from multiple data points, and that was before covid.

One guy I know was denied a renewal to continue working at his company, which should be a steady state formality. He was making a great wage, not eligible for Medicare and the tax bracket is punishing until you have PR. He was a cash cow win/win deal that my country saw fit to pass on.

It may be easier than moving to the US, but compared to NZ or Germany, the other countries I have first hand experience with, it's practically Fort Knox.

In fact it's widely seen as easier to immigrate to NZ first then use that to get to Australia, though that differs with policy changes and your occupation.

I'd recommend NZ anyway, at least if you're semi retiring. The wages aren't great but everything else is better.