I think the best way is to balance the risk. Understand if there is an ulterior motive, what the effect of that could be. Is it significant? Will seeking other perspectives limit the scope of its effect?

Depending on what you’re trying to get out of the internet, the motives behind it may not matter that much. For entertainment, probably not a whole lot - except for the potential of positioning to view situations a certain way which any form of media has.

If you’re researching into political topics, the risk is higher and the effects are greater. You need to be more wary, read wider, and apply more critical evaluation to the texts.

Not every bad thing is a completely bad thing, and just because something is bad it doesn’t mean it should be ignored completely.

In a way, the motives behind something can sometimes tell you more than the thing itself.