A squeaking wiper blade can imply wear, filth buildup
https://mega-wiki.win/index.php/What_Happens_If_You_Ignore_a_Small_Chip_in_Your_Windshield%3F_92753
A squeaking wiper blade can imply put on, grime buildup, or a dry windshield; cleansing or changing the blade regularly solves the issue.