If you're connected to the network, you are part of the ecosystem, you are not a passive target, you are a viable target.
If you airgap your computer systems, such that they're not attached to any network attached to the internet. Then you would have a reasonable amount of isolation, and you could say that's a very passive stance.
In general, not following links is a good thing, always going to the canonical contact for your banking, and other important resources is good. But I wouldn't consider that being passive, that's just data hygiene. If somebody calls you on the phone and says I'm with the government tell me your personal information you go no, send me a letter like the government would. That's just a reasonable level of paranoia.
And just because you're not creating content, doesn't mean the consumption of content doesn't have risk, you could have a zero day on your image formats, so your forum reader gets exploited and installs malware on your computer. The whole webp format fiasco from last month, you're always at risk if you're participating in the ecosystem.