Monsey Yid,
I know that midrash and it is shrecklech scary.
But, there were other reasons for the mabul that are not treated with the same mindset.
For example – Gezel. Even a פחות משוה פרוטה . Is a “white collar criminal” allowed to be elected ?
And זרע לבטלה . And ע״ז.
The US is full with these other aveiros also. We are living in galus. May Moshiach come speedily.
PS. לכאורה the pshat in the medrash is that not only was the toevah not prohibited but they went so fat as to also codify into law to allow marriage.
To just disallow the marriage part , but to never even try to disallow the actual toevah, is not enough. Maybe Jews should only live in countries with Sharia law.