I did and I don’t find it persuasive, just as I don’t find the books and lectures that come to different conclusions and say it can’t be angels persuasive either. But I have no definitive alternative to push because scripture isn’t clear. It’s certainly possible they could be angels but scripture just doesn’t tell us.
Here is a thought: A being not visible to the folks in palace party central, Babylon (Daniel 5) physically wrote upon a wall with only the hand in our spacetime. That being I presume to be a messenger, an Angel. If an Angel can reach from their spacetime coordinate realm into ours then I presume they could mate with human females. ymmv