I would read the intonation of your last sentence differently if the italicized pronouns were not italicized. So if you actually meant to have that strong an emphasis on them, then the italics aren’t superfluous.
I also would have read it differently in my mind without the italics. But consider that maybe the emphasis on “I” and “you” in the spoken version would be there in the first place to elucidate the opposition that comes across more easily in writing. It’s difficult to be sure, but I don’t think the I/you-emphasis version gives any extra information that’s absent from the non-italicized written version.
I would read the intonation of your last sentence differently if the italicized pronouns were not italicized. So if you actually meant to have that strong an emphasis on them, then the italics aren’t superfluous.
I also would have read it differently in my mind without the italics. But consider that maybe the emphasis on “I” and “you” in the spoken version would be there in the first place to elucidate the opposition that comes across more easily in writing. It’s difficult to be sure, but I don’t think the I/you-emphasis version gives any extra information that’s absent from the non-italicized written version.