Am I wrong for thinking this way?

So I'm looking to get married, a rishta came a few weeks ago, and we visited their home, I like the girl, and my family liked her as well.

A couple of days ago, they visited our house as well, my family was like, let's wait on them for a few days and we'll then ask them about the possiblity of steering it onwards.

So my mother talked to her mom today, and her ammi said they liked everything about me, but they need some confirmation about the amount of money I make, and she straight-up asked for my bank statements :/, even though I told them that I make X amount of money.

Now, I do not like where this going. I mean, why do I have to give bank statements to Larki-walay? It feels absurd.

Am I overreacting? I work as a freelancer, so that might have caused the reaction but still, them asking for my yearly bank statements is very weird to me.