Seems like the SOTU hurt Biden.
Not according to what is mentioned in the (paywalled) article.
Yes, the topline number didn't shift towards Biden, however:
Following his State of the Union address, Biden's net buzz — the share who recently heard something positive about him minus the share who recently heard something negative — ticked up to 3 points underwater. It's the closest Biden's net buzz figure has been to even since May 2023, just after he announced his re-election campaign.
There are signs Biden's State of the Union address is assuaging some voter concerns about his age — particularly among his own base. Comparing surveys conducted before and after the March 7 speech, the share of voters who said Biden is “too old” fell slightly compared with the previous week, from 68% to 65%, while the share who disagreed with the sentiment grew from 26% to 30%.
And I'll save you the effort. Yes, the economy is the top issue among voters in this poll.