eicha as a kinah

A few years ago I suggested that the reading if Eicha is a kiyum of kinos, not a chiyuv of kri'as hamegilah like other megilos. This is why the mes sofrim brings down that the reading must be accompanied by targum so that everyone can understand the message, and why women are obligated as well as men, and why it is read at night when our mourning is most intense, unlike other megilos that are read during the day. The mes sofrim writes that the megilah is read "b'bechi u'b'yilalah" -- perhaps there is no formal trop, but rather a chiyuv to read in a crying manner because it is a lamentation.

I saw in Rav Shternbruch's teshuvos another chidush din along these same lines. He suggests that there may not be a din of shomea k'oneh by eicha because kina is a personal expression of grief -- someone else can't express feeling or grieve on your behalf.  I like the idea, but the mes sofrim sounds like there was a chazan who read on behalf of everyone. Perhaps the idea in the mes sofrim is that aside from our grief as individuals, there is a concept of communal mourning. The reading of Eicha is not meant to fulfill our individual chovas hayachid of kina, in which case you would need to debate whether shomea k'oneh applies, but rather is a kiyum of a chovas hatzibur of communal mourning.