Posting on Reddit will pretty much always bring hate, even if the video does well on there and you end up on the main page. People just have very polarized opinions on there and no filter on what they say. It can be a great tool for getting views, you just have to make sure you have thick skin. It's a great way to work on getting some criticism calluses too where you learn to not care so much if people don't like you.
So proceed with caution when posting (make sure you aren't violating their self-promotion ratio), enjoy the views boost, and ignore the dislikes. Take Redditors' comments with a huge grain of salt.