Your argument is that we should not pay attention because whoever the MP who made this comments is, she is not part of the EU commission and she is not a big wig as you put it. So we could assume that whatever she says does not carry much weight.

But the website reporting this news does not agree with you here, otherwise, why report it in the first place? To them, it matters and it is important because she is part of the Renew group. The Renew group is staunchly opposed to the far-right and pro NATO and pro Ukraine, that is to say the complete opposite to this Romanian candidate.

Furthermore, the MP in question is a close ally of the French president which means she could have the means to convince other MPs to join her and maybe get some support from Macron to jump start some kind of investigation into this matter.

Macron is/was the de facto leading figure in Europe (before becoming a lame duck in the last election) and his words still carry a lot of weight at the EU level.

If she was a random MP in a small fringe party on the sidelines of the EU parliament, I would have agreed with you but not in this case.

Maybe you are right and nothing will come out of it but to me this is not nothing and it should not be dismissed as easily as you think.