That's not the case with the alternatives, most tend to go really hard on one side of the extremism scale (right: voat, left: raddle).
Yes it hosts /r/the_donald or whatever but reddit as a whole is very left-leaning.
Edit: Hey ya'll instead of downvoting me how about providing some evidence of widespread right-leaning thoughts that aren't isolated to individual subreddits and shamed throughout the rest of reddit? Spoiler: You can't
They shut it down. 0 new posts for past 3 months.
It's pointless trying to be a "respectable" right wing intellectual because you have to spend all your time running around justifying the completely incoherent things that Trump is talking about.
Chicago school economics? You can have a discussion with that, and leave it civil. That doesn't work with the_donald.
"Yeah, saving trees and whales sounds fine, but they should stop it with all the LGBTQ, BLM, socialist stuff"
You can't have a civil discussion with those people either. In fact it's getting increasingly difficult to have civil discussions with anyone (HN is an exception because everyone is on their best behaviour, but to a large extent this results in self-censorship; you can see that the least politically correct comments are made with throw-away accounts).