Ugh, and there's the next thing. Thanks
When my car was restored 20+ years ago, on general principles, I changed the windscreen. By then the original, pitted and worn, was over 30 years old. I've put 20K miles on the car in the past 20 years, and a lot of that highway "at speed". No better way to sandblast a windscreen I'm afraid. So, in the last round of work, I changed it again in 2021. While I try not to drive much at night (gone are the days of zooming home on a Sunday evening in July from Joe's place in Blacklick to Michigan) these days, I'm happy to have a windscreen that can actually be cleaned and free of annoying pits.
Ignoring the de-lamination for a moment, if you clean your windscreen in and out and still don't like looking through it (that was me) time to change it. The de-lamination is only an "accelerant" for you.