I am a bit confused by this discussion
“respect” and “disrespect” is to a certain extent subjective and to a larger extent depends on intention.
there is nothing inherently respectful or disrespectfu labout wearing a hat indoors yet in a church it is considered disrespectful and in a shul (levadil elef alfei havdalos) it is not.
As for names.
I refer to R’ Moshe Feinstein as “Reb Moshe” as I’m sure many of you do. I have cousin who, shall we say, is not part of the olam hayeshivos and he was very surprised that i would refer to the “Great Rabbi Feinstein” by his first name with a mere prefix of Reb given to any Reb Gimpel
I’m sure most (or all) of you agree that Referring to R’ Moshe in said manner is in no way disrespectful.
(note this isnt true for everybody If I refer to my Local shul rAv Rabbi Almoni as Reb Ploni arguably that is disrespectful since that is not the convention)
when it comes to some Taanaim and Amoraim we refer to some of them by their first names without any prefix (Hillel, Shamai, Shmuel, Abaye etc)
I’m sure you will agree these arent disrespectful
Their are many many Gedolim who we refer to by the titles of their Works again without any prefix (eg the chazon Ish, the Aruch hashulchan, chasam Sofer the lsit goes on and on)
The point is respect/disrespect is largely based on convention and intention.
there is no denying that The Rav referred to himself in his writings as “Rabbi J.B. Solovitchik” Furthermore many of his talmidim did and do refer to him as “JB” as a term of endearment (though not so much publicly). If the intent is not disrespectful given that it is somewhat accepted (Certainly ” Rabbi J.B. Solovitchik” and (I would argue “JB” as well) it is not automatically disrespectful.