Peace Psyah again:
1-I did mention that syed and non syed as not even a part of discussion back when this event happen. hence not applicable.
2- More importantly, the prophet SAW had no objection for her to be with someone who did not belong to her RA lineage. Right?
It was her RA who did not want to be married to someone who was poor and was not to her caliber. Hence here her wish was more important not her lineage!
The prophet SAW and his sahaba RA did not look for lineage in women nor their women looked for lineage in men before they married to each other… bro!
Please bring a strong example in this regard. 
Wow!
How did you come in to this conclusion? 
First, your statement was clear enough that your position is that somehow syeds are so respectful that a syeddah should get married to a syed “so no one else can be held responsible for her mistreatment”.
I did not have to ask but wanted to give you benefit of doubt knowing that you have good grasp over religion but it was simply very unusual and false position to take for someone to justify a syeddah to marry only a syed or ‘better’ to be married to a syed!
Please read other posts. I do not think anyone in good sense will agree that lineage has any bearing on ability to marry anyone.
Islam came to abolish this practice, not confirm or condone it by any direct or indirect, hidden or open means.
Rest of your explanation is again based on some high regard to someone who has claim of lineage of the prophet SAW.
No where in islam as many of us understand that the respect is do high that the person cannot be admonished or be told what is wrong with that person in an argument. She cannot use her lineage to defend any bad deed..period!
If anything, there may be more responsibility on her (or anyone claims to be a syed) part to be good.
Alhamdulillah..So far I have no problem understanding men women relationships Bhai Sahab!