Technically everything you say is correct (with the exception of "not really liked in his time")
Yes, I was talking about his late years in particular. Beethoven was without a doubt considered like one of the greatest living composer, but he was also getting out of fashion. Other composers, Hummel but also Rossini had immense success. Hummel was well known and was playing across all Europe. Beethoven though respected and admired was also mis-understood and not so much played. He compositions were difficult, often times long and were puzzling the audience with his abrupt sometimes even violent tone, strong chromaticims and an architecture that wasnt always clear. His works were often more respected than "liked"
AW Thayer who wrote his bio (still consulted as one of the best) write what a visitor reports when visiting Beethoven (Rochlitz 1822):
"Of my works you hear nothing ...What is there for them to hear? “Fidelio”? they can’t perform it and do not want to hear it. The symphonies? For these they have no time. The concertos? Everybody grinds out his own productions. The solos? They’re out of fashion long ago—and fashion is everything. At the best, Schuppanzigh occasionally digs up a quartet"
Many accounts of Beethoven works have been published by the Allgemeine musikalische Zeitung. Here is what Adolf Marx writes in 1826 about the 9th symphony:
"Now, to whoever imagined that this new Beethovenian creation would be a vocal composition in the hitherto customary sense, the accomplishment must appear incomprehensible and incomplete. Such a long prelude (four grand symphonic movements)3 to a moderately long cantata appears incomprehensible; the treatment, indeed even the dismemberment of the poem, appears unsatisfying and incom-plete."
Similar and sometimes stronger reactions were reported, for example for the first performance of the 9th in London. Again people were puzzled by the style, and other works had more preference. Many reports are polite and admire the great composer but the enthousiasm is often absent (though not always).
- yet (and I mean no disrespect by this) it comes off as sounding a bit dismissive. Beethoven was a genius and a titan among composers of serious music who took the classical form about as far as it could go.
I usually try not to rank composers as I think it is a complicated task. I dont deny that B is one of the greatest composer in classical music. So I dont see any disagreement here. I let others though position him vs other composers.
The fact that the classical form was "progressively abandoned by romantic composers" had nothing to do with the significance of Beethoven's achievements.
There is no implication of my statement about B importance. It is just a fact. My post was about Chopin or other romantic composers. It is quite natural that new generation of composers seek to renew the musical langage of the previous generation. The same happend with Bach and his successors like Mozart who was not trying to imitate him.
Chopin is probably the romantic composer that was most immune to Beethoven influence. Others like Schumann or mainly Schubert did to some extent reuse some of the Beethoven style and technique, mostly in symphonic compositions. Schubert is really apart, somewhere in between tradition and innovation. But the most innovative characteristics of romantic composers are not coming from the legacy of Beethoven. We have to wait for composers like Brahms to see B legacy picking up again.