Is this like if you throw enough nonsense logic at the wall something will stick? Okay
1. The amount of time it takes to make progress is not relevant to electing a candidate attempting to make progress. Choose Edward Bates over Abraham Lincoln and we might still now be a slave nation.
2. Fuck em all - let's see centrists rigged a primary to get Hillary in, then nominated Biden who was clearly too old, then ran a candidate who hadn't even bothered to win a primary. That's how you fuck em all where all is the whole USA.
3. Social Democracy is not the same as Democratic Socialism - more straw man nonsense from a man supporting a candidate wholly owned by corporations and who plans on doing nothing to help anyone - just like he did in California where I live
4. Not sure what the college story is about, but I doubt you are older than me and if you are that would be pretty old.
To sum up - the DSA has nothing to do with centrist Democrats destroying the country with corporate shill presidential candidates.