It seems that there are some people posting who confuse Litvish with modern. Litvishe people are very ehrlich and frum and so are Chassidishe people. When some people who may be Chasidish or Litvish and look for a loophole, that in my opinion is called modern, something i will not post about as deep down we all know what it means.
There is halacha and in our family, at this point with bar mitzva and bas mitzva ages we have two tables. The young ladies will always go to another table without having to even say anything. Unfortunately, besides the Shulcha Orech there is the new trend to follow the “THEY” or “THEM” which may be very wrong at times even if many do it.
If we are not such a large crowd then men at one end and women at others with facing of only a married couple.
For those who don’t agree ask your dayan or Rav and do what is right for yourself, not for others.