I just had my 2023 Model Y windshield replaced with PGW glass, a 3rd party replacement by a 3rd party installer. $850 in the San Francisco Bay Area where other shops quoted an average of $1500 with a high of $2200 and a low of $1280. My installer had the glass in stock and was ready to install where others were saying 8-10 week backorder.
I understand the concerns about warranty and about Tesla treating you as second-class if you have 3rd party parts, but the truth is, they treat nearly all of their Model 3/Y customers that way, so it isn't going to make a difference. As far as the quality of the glass, I've never seen a piece of automotive glass that was lower quality than my Model Y original windshield, which had as much pitting and imperfections after 2 months as other vehicles I've owned after more than 10 years, literally. The factory glass is so poor that I have no worries that PGW, which is an OEM supplier for many brands, could do any worse than Saint Gorbain. If this windshield needs replacement in one year, it will have still outperformed the Tesla glass for half the cost.
The installers did an excellent job, the fit is perfect, gaps are more even than factory, no wind noise or leakage issues. The glass is stamped "Acoustic Glass" and had labels referring to its strict compliance with OEM standards for advanced driver assistance features. I re-calibrated the cameras using the button in the center screen, though it didn't seem that they needed it. Autosteer is working flawlessly, even in very heavy rain at night. Rain sensing is working better than ever. With the stock windshield it would put the wipers on high for the slightest mist and leave them running long after the glass was dry, now it selects a speed and interval that is appropriate for the conditions, and adjusts it as needed. One physical difference I noticed was that the defroster lines for the camera area are different, on the original glass it was two rectangular boxes, on the PGW glass it is just straight horizontal lines. I checked all three front facing camera previews and the lines are not visible unless you put the hood up, which shortens the focal distance enough that you start to see a faintly darkened line across the white hood in one of the three cameras. This completely disappears as soon as you put the hood down and focus on something in front of the bumper or further. I never checked the front camera previews with the original glass, but it should have had the same artifact, just with two vertical lines down the middle instead of horizontal lines.