The first 6-12 months here (during/right after the Reddit API drama) were great. After that....not so much.
Note: Edited to add to the title and replace the image link with one that won't be going offline in 2 weeks.
Yes, the social democrats wanted a liberal parliamentary democracy, not a Soviet stay with dictatorship of the proletariat. The communists tried a communist revolution and they lost. The alternative would have been a civil war, maybe even a breakup of Germany. Most people wanted stability and get back to their lives after WW1.
The communists continuously avoided moderation and compromise with the social democrats. They fought against the Weimar Republic actively. Many were accelerationists, who thought the rise of the Nazis would be to their benefit in the end.