What's worse than marxism is capitalism. So, yeah sure they're right...
Or just claiming "marxism" is bad itself is "bad". Authoritarian anything is bad, capitalism or communism. Both have killed millions and billions. So authoritarian marxism is bad, but index funds aren't that..so I don't even get where they're coming from.
Non-statist or anarcho-communism has never been implemented much, but would be ideal, or resource-based economy, or some hybrid of anarcho-communism with capitalism... unions/co-ops creating dual power which holds capitalism in check.
That's probably the best of all scenarios. It's highly possible with de-centralized companies and unions on blockchain tech, but not until it's more environmentally sound and the technology more advanced.
I can't tell are they trying to scare marxists/socialists to invest in index funds or index fund investors who are "afraid" of socialism to divest their investments? Should a news agency really be pushing either of these agendas?