Beethoven: Wasn't he the type of composer who would put all the pedal markings, fingering guides, and dynamic markings all over the work on how it MUST be played? Didn't he leave no room for intrepretation? Unlike some other composers of his time. Wasn't beethoven strict and dilibrate on how the piece should be played is as how he heard it in his head?
With that said. The sheet music is simple enough that there are a few markings of "sF" and a couple of staccato markings for the last two eigth notes in the set of four. It is difficult to (assuming that my above statement is true about Beethoven) to play it within the accepitble limits of what he wrote down. Regardless of "pp" or "ff" there is no room for the pianist, only the composer's brilliance.
Beethoven scores have normally much less dynamic expression markings, explicit melody bows and so on compared to the composers of the romantique area. Look at Chopin scores, how dense and exact pedal markings and expression details are.
I feel that being a strict (as written) player is not generally welcomed here regarding simple-short pieces.
Every composition lets room for interpretation. Even Chopin with the tons of expression markings said to a student, he don't need to have played it in the musical language of Maestro Chopin, it can well be the own language. It shall however not sound like a foreign language, that is the only thing what people don't welcome so much! And it does not care whether it are simple or short pieces.
What I will say, of course one should check whether the dynamic markings work or not for the own interpretation. What is much more important to present the piece in a convincing manner. If you find nothing to improve on your Beethoven take, that's fine for you. If you have the possibility that a more advanced pianist plays that Beethoven piece for you, perhaps you find something then in order to let it sound better. The best thing would be if you would take a teacher, just my opinion, you will progress much faster.
Do you feel that the critique on your Beethoven take is unjustified? Your statements sounds so to me. Well, it is only a personal opinion and it is up to you how to handle this.