Whether they can be credited with caring or not, one party didn't follow Netanyahu into war casually, even fecklessly.
And the other party was (among other faults) amazingly complacent as major landlords colluded at scale - via RealPage software - to send apartment rents skyrocketing.
If you look at the timeline, and the demographics of voters who lost enthusiasm for Biden between 2020 and 2024, it looks like a whole lotta the Americans living paycheck-to-paycheck decided to vote their pocketbooks.
Vs. back in '72, when Biden was just getting elected to the Senate, Pres. Nixon was a noisy anti-inflation zealot. (Not saying Nixon was sane, nor legal...) Since Nixon was re-elected with >60% of the popular vote - in spite of negatives like the Vietnam War - I'd say that the Dem's failure to follow a so-obvious winning reelection strategy was exactly what handed Trump the opportunity to make the decisions which you so strongly dislike.
The whataboutists will tell you Bernie would storm the front himself.