there are still two sides of any given issue; that's why the issue is an issue in the first place.

There's always going to be multiple sides, most opinions are on some sort of spectrum. Saying there are definitely two sides and both are valid reframes the wide spectrum of opinions into one that is inherently looking to justify an "us vs them" paradigm. Why sort it politically and not socio-economically? I'm sure there are more workers on reddit than capitalists (aka people who own things for a living rather than working for a living).

When it comes to something like abortion, most people aren't inherently 100% prolife or prochoice (or to rephrase, no abortions no matter what or abortions whenever the mother wants). It's like, in cases of rape/incest is a common excuse/reason to justify abortion, a lot of pro-life people will disagree about whether or not it's still prolife (despite not having huge arguments about it). But framing every single opinion as "prolife" or "prochoice" creates a false dichotomy because there's always going to be someone you don't 100% agree with even within each viewpoint.

For two specific issues that can be contentious in the view of conservatives, the issue itself isn't actually contentious.

There are more than just two, I'm simply calling out two very common ideas and reframing them to show that it isn't necessarily political. Sure, everything can be political based on whether or not politicians want to enforce laws on it, but people don't choose their opinions based on politics; they choose their politics based on their opinions, I'm simply pointing out that there are a lot of issues that "lean left" because they have been studied and the research tends to agree with what a lot of left leaning people are say. That doesn't make them left leaning, it just means that people on the left have more evidence to back up what they are saying

On those issues, other issues too, the point isn't the say conservatives are always wrong but that there are quite a few issues where there's more evidence supporting things that liberals generally think.

OP, and honestly large portions of the media, inherently view it as a 1 vs 1 thing when really if we accounted for all of the opinions there'd be a spectrum and you couldn't necessarily point out someone's politics just by viewing was opinion of theirs.

If reddit IS a bubble, it should be easy to prove or at the very least research. What research is being done to prove that reddit is inherently biased or left leaning? Personal anecdotes? I have anecdotes, so anecdote for anecdote proves nothing.

All in all, OP doesn't have a reason to think this way, they're really just going off of vibes and perception.

I think there's this fallacy that says all views and ideas are equal just because they have opposite views that exist, but that's not really right

For example, climate change, you'll see a lot of conservatives balk and a lot of liberals believe--but one side has more evidence than the other about whether or not their side is right. It has less to do with politics in cases like this.

So in either case, you'd still have to examine the subreddits past "is there a neutral presence or does it lean one way", because only looking at whether or not there is 1 liberal voice for every conservative voice doesn't actually reflect whether or not it's an echochamber.

Because again, having people generally think the same things doesn't mean there is a conclusive collective group of ideals that everyone ascribes to and believes in, or however you want to define echo-chamber.

Let's say someone tried to bring up the link between vaccines and autism (which is a conservative view in my country), but they get dogpiled on because there's 0 science behind the claim, there isn't necessarily an echochamber just because the vast majority of people understand there is no link and that the autism vaccine science is bunk.

I think you'd need to prove that anyone on reddit definitively uses those subreddits

Im a leftist, vote democrat, but I've never touched either subreddit--I'm sure they are popular subreddits but reddit is such a diverse place with a diverse range of interests

The number of subreddits you'd need to define as "echo chamber" is more than anyone would count, and even then that doesn't mean you agree with the majority of things being said.

I love manga, but I always get downvoted whenever I say harem is a trash genre that can't even do wishfulfillment right