The Overton window in the US stems from center-right (Democrats) to extreme-right (Republicans) so if you're in the middle of that you're firmly a conservative.
Don't believe me? Example: we've got the ongoing threat of a strike tby rail workers who want paid sick leave. They currently have no paid sick leave. Calling in sick will come off their vacation days. It may even get them disciplined and fired. They asked for 15 paid sick days. Some in Congress wanted to compromise and give them 7 days.
Over the last few years the rail companies have furloughed ~30% of their staff to the point where covering sick staff is a real problem. They've so far made $20 billion on profits this year. The excess profits have routinely been used in share buybacks and dividends.
Biden, who claims to be pro-labor, has sided with the rail companies in directing Congress to use an old law to rob these workers of their right to industrial action and mandate a contract. With no paid sick leave.
How can anyone with a straight face in good faith argue there is any leftist power in politics when Democrats side with capital and routinely go out of their way to eviscerate labor and the progressive elements of their party?
> I think people on the left have a blind spot here
So you've made two false premises here:
1. There are peeople on the left in politics. As I noted above, this is a falsehood; and
2. The "left" is a monolith and wanted to suppress the Hunter Biden story. This is right-wing propaganda because conservatives treat Trump like a cult leader who is above the law.
Speaking as a leftist (FWIW), I don't care about Hunter Biden. Throw in jail. Hilary too. I don't think Twitter should've blocked the NY Post story but ultimately it's a nothing burger because there's nothing of substance on this laptop. If there was it would've been passed on to law enforcement instead of being passed raround right-wing operatives (to the point of destroying any chain of custody) in an effort to smear the administration and nothing came of it, which is why they just fell back to the old playbook of pedo allegations.
> ... people on the right grow to resent them
People on the right already call people on the left groomers, pedos and criminals.
> ... this authoritarian suppression of speech
What suppression? Everyone knows about this story. The only "suppression" (which, again, I personally disagree with) is you couldn't share a link to one post on one site (Twitter). to believe this is "authoritarian suppression" belies successful right-wing propaganda.
> ... both sides ...
Bothsidesing American politics does nothing more than show how normalized right-wing ideas have become (and how far right the Overton window has swung). You have the former president espousing QAnon conspiracies, election denialism at every level of government and white supremacy (which is a core tenet of the Republican Party and America's founding and history) spilling over to where the likes of Kanye are saying the quiet part out loud, Elon Musk tweeted (then retracted) a conspiracy about Paul Pelosi and his attacker and the #1 "news" program in US openly pushing Nazi propaganda (ie Tucker Carlson and the Great Replacement Theory).
Bothsidesing this doesn't make one enlightened or "above the fray".