HaLeiVi -“But you are forgetting that there is a reason why saying Gut Shabbos can be considered Kiddush. It’s not magic.
When you say Gut Shabbos, on Shabbos, you are acknowleging the Kedushas Hayom. When you are actually not acknowledging anything, then it is not Kiddush.”
You’re wasting your time. He makes things up to coincide with his beliefs. I mentioned this already many times that a Kabbalah needs Daas and saying something like Good Shabbos when he still is planning on doing Melacha obviously he had no Daas. That it needs Daas is obvious to anybody who picked up a S’A on Hilchos Shabbos. He is also a liar. Even if you say the R’ A. Eiger held that it works against your will which you have no reason to even think this way, R’ A. Eiger is Mesufak whether this works on Kiddush. So let’s say that R’ A. Eiger held for sure, not a Sofek, even against one’s will saying Good Shabbos is Mekabel Shabbos -there still is no reason to refrain from saying Good Shabbos on Fri. because the Biur Halacha clearly doesn’t hold of this.
Maybe you can say the reason why some have this Chumra is because of Maaras Ayin. It’s 10 minutes to Shkia and you wish s/o a Good Shabbos and then you get in your car to drive to Shul.
Am Haaretzim might think you’re allowed to drive on Shabbos because he said Good Shabbos and then drove or doing any Melacha -(driving was just an example). Otherwise I can see no reason to have this “Chumra”!