What I got from it was two things. One is that you're saying people are naive at best for being excited about big Dem wins because in the past when that has happened it's led to a lot of unforced compromise and reaching across the aisle that was very disappointing.
The other is that you're upset that the general attitude of "voting for Dems will never change anything" is labeled doomerism whereas post-election you feel that that same attitude is being echoed by political analysts.
Let me know if I'm reading it wrong; there's definitely a possibility I'm reading between the lines too much.