Bandts tweet was about securing the youth vote as they would expect a lot of the Drs and Lawyers wives votes to go towards the independents.
Yeah, for some time now the Greens have shifted their focus from pressuring/influencing the major parties on climate policy toward maximising the $ received from getting their share of first preference votes. It's why their messaging has become more scattered and populist amongst their targeted demographic; rather than following a consistent strategy that supports their core values.