In terms of colour quality, it's still good to buy the BenQ PD3200 in 2022 because the colour quality (as a sRGB monitor) is still good. Monitor colour technology has matured many years ago so most of the upgrades we see in recent years are on additional features, e.g. HDR, USB-C, TB3, power charging.
Since you're using a MBP 2019, I recommend you go with a display that has USB-C connection. That way you won't have to get a USB-C to HDMI/DisplayPort adapter.
Thunderbolt 3 is not necessary unless you want to daisy-chain (some USB-C monitors can do that too) or you need the extra speed to use the display as a USB hub. TB3 increases the price for monitors significantly. You could use the money saved to get a colour calibrator instead which will be more useful. E.g. You can calibrate your MBP and display to show the same colours.
As for P3, I wouldn't worry too much about it. A monitor with 100% sRGB coverage will be good enough.
Consider Dell U and UP (AdobeRGB) series displays, and ASUS ProArt monitors too. They are the competing models for BenQ.
@John
In terms of colour quality, it's still good to buy the BenQ PD3200 in 2022 because the colour quality (as a sRGB monitor) is still good. Monitor colour technology has matured many years ago so most of the upgrades we see in recent years are on additional features, e.g. HDR, USB-C, TB3, power charging.
Since you're using a MBP 2019, I recommend you go with a display that has USB-C connection. That way you won't have to get a USB-C to HDMI/DisplayPort adapter.
Thunderbolt 3 is not necessary unless you want to daisy-chain (some USB-C monitors can do that too) or you need the extra speed to use the display as a USB hub. TB3 increases the price for monitors significantly. You could use the money saved to get a colour calibrator instead which will be more useful. E.g. You can calibrate your MBP and display to show the same colours.
As for P3, I wouldn't worry too much about it. A monitor with 100% sRGB coverage will be good enough.
Consider Dell U and UP (AdobeRGB) series displays, and ASUS ProArt monitors too. They are the competing models for BenQ.