It seems we discussed that a while back too. "Sustainable" being an overused word that suggests you are a lefty treehugging libberul. It's just a word, though.

I suspect in about another decade, the watchword will be "survivable". (what with multiple crises coming alont)

The watchword, if you don't want to sound like a 'lefty treehugging libberul' is "resilient". Much more positive, and without the association with crusties.