Question:
In the article it says:
Yet, the Magen Avraham (Orach Chaim 167:18) cites the statement of the Gemara as normative halacha, noting elsewhere (271:12) in the name of Rav Yaakov Emden that this is actually a biblical prohibition.
Magen Avraham died before Reb Yaakov Emden was born so it is highly doubtful he quoted him.
Answer:
I looked at the article that was written in the Hebrew format, and there is no quote there from the Magen Avrohom in the name of R’ Yaakov Emden, rather the Magen Avrohom quoting a gemora. Additionally the Magen Avrohom at the above source does not quote R’ Y. Emden. If it says that in the English version it is obviously a typo,
Best wishes and have a good Shabbos
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