It may seem as though I glossed over that, but my larger point is people need to understand what news is and means first.
A bubble is inevitable in either event, finite time ensures that.
We can think of that in terms of know-your-enemy, but often the effect of hearing from the best of those enemies is to find the ways in which they are either allies, or at least to learn to empathize with their positions. If we had no bubble, and just took in the loudest most amplified opinions at random, we'd be more likely to inaccurately conclude that those positions had no steel-man positions to learn from. So a well curated bubble is better than the illusion of none at all.
Anti-vaxers and flat-earthers might be called "bubbles", but then so is the pro-vax round-world view. After all, if you only ever read round-world media, aren't you closing your mind to alternative facts? /s
That's perhaps because you live in a bubble.
The only people you hear complain about bubbles are the people that are marginalized, if you agree with the bubble you will love every second of it and hate everyone outside. So, watch out before you speak in support of your bubble, that probably just means you are in the center.