For that reason i dislike Rain-X etc as well, never had a good experience with any water repellent on the windshield.
Horrible stuff!
It indeed is, learned the hard way.
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.