Are Tears Me'Akeiv Certain Selihot?

Rav Ovadia Yosef Shlit"a, in his Motza'ei Shabbat shiur (at the 52:45 mark), says that some Aharonim forbid you from singing the Piyut called Eilecha Hashem unless one is actually crying since included in that Piyut are the words: וְגַם אֶת דִּמְעָתִי שִׂימָה בְּנֹאדֶךָ, and if a person is not crying, it's as if he is a liar.

He then says that other Aharonim permit it since it refers to tears in general - not necessarily tears right now, and if a person will cry on Yom Hakippurim, that's what is meant during the Selihot.

I would add that this could be similar to the halacha in Shulhan Aruch (Orah Hayim - beginning of Siman 25) that one who says Keri'at Shema without Tefilin, it's as if he is bearing false witness upon himself.

After doing a Google search, it seems that the Lubavitcher Rebbe Zt"l said the following on this:

דהא דאמרינן דכל הקורא קריאת שמע ללא תפילין
מעיד עדות שקר על עצמו היינו דוקא אם לא מניח תפילין כלל
באותו היום, אבל עם עתיד להניח תפילין לאחר מכן שוב לא
נחשבת קריאתו כעדות שקר

which would seem to follow the second opinion of Aharonim that Rav Ovadia quoted.