It’s good that capitalism has become a dirty word — that’s grist to our mill — but she is using it to mean unrestrained free market capitalism. Which leaves her open to the interpretation in one of the comments:
FaceTheClimateEmergency
@DorothyBeach
3 Feb
#AOC is talking about a movement towards a more humane #capitalism that many democracies in Europe have. She said extremist people are pushing an agenda for extreme capitalism and because that have money are overly influential (a Putin model btw).
As an elected Democratic Party representative that’s what she’s doing in practice. And, as the Yahoo article mentions, the long-term alternative to which she is committed is a market economy of workers’ co-operatives which, whatever it is, is not socialism.