Earlier quoted context omitted.
Sorry, I'm not talking about Reddit specially. The cultural pendulum travels back and forth so one day, sooner than you think, the people you disagree with will make the editorial decisions for the major social media platforms. If you want to make it the rule that it's fine for platforms like that to remove their political opponents, by all means I just suspect you or your children will regret it.
You didn't address my point. What about undermining the concept of ownership? You're saying that if I produce a website I should not be allowed to control what is posted there? Who is going to enforce that? I suspect you or your children would regret that sort of thing as well. Perhaps the issue isn't that black and white.
I don't know how old you are but do you recall the mid to late 90s/early 2000's in the US? Back then we had to fight so shows like South Park could be shown on cable television (a private platform) due to the fact that the general consensus among the population was that content like that offended their personal and religious values and should be prohibited. Those exact people won't be in power again, but people similar to them almost certainly will. Moves like this hand them a weapon to use against you.