Yes, did you?
It's called being pro-active and getting your ducks in a row early, so as to relieve yourself of one more thing to remember to do in the future.
Then what is to stop Trump from sending the same letter and making the same statement now? He claims that election laws prevent it, yet he did it four years ago. So right now he should be able to say to Hannity, "While I cannot make a formal announcement now, I have filed the paperwork saying I have reached the legal threshold to run for reelection in 2024."
Personally I am not concerned about why or why not. If you believe him to be a liar, then that is your right to do so, but I will not play that game with you. Are you a Never-Trumper? With your insane assertion and questioning of his statement, I am sure beginning to think you are.
Yes, did you?
Since I provided the verbiage of the letter, along with the link to what was contained in the letter regarding the rule he referenced in his letter, in my previous response, the answer to your question should have been obvious. For you to even ask me the above question, indicates to me that you are not very observant at all.