I'm quite sure people can derived extramusical meaning (as I have done in the past) from Beethoven 3rd and 5th Symphony but they are both logical musically as well
Beethoven 6th Symphony was when I started hearing compromising of content to suit extramusical dynamic
Haydn 6th Symphony says lets have an exciting development section because development section is intrinsically interesting. Beethoven decided to have a basic development section because it reflects the extra-musical atmosphere of the work. Haydn wouldn't repeat a motive 13 times with zero transformation just to represent the varied repetition of nature because that isn't interesting musically while Beethoven decided to do that for he sake of his programmatic description.
Now Beethoven compensated with extraordinary orchestration and great manipulation of timbre and dynamics but this seems like timbre isn't used to augment pure composition (like Haydn 6th Symphony where his usages of flutes to depict nature but the theme would work just as well on a solo piano) but replace pure composition where playing the riff 13 times on a solo piano would lose a lot of the emotional power