The analysis done several years ago by kvic, pertaining to null redirection (0.0.0.0), is no longer true I believe.
I think it was someone on the pihole forum who re-analyzed and found that under modern device/OS/browser use cases, there was no noticeable difference in page loads comparing 0.0.0.0 to pixelserv-TLS IP. In addition, pixelserv-TLS redirection can cause issues with mobile devices, IoT, and media streamers (Chromecast, Apple TV, etc). This is a big issue because those devices are rapidly becoming the majority in people's houses.
I know for me, the reason I have 23 devices on my LAN is because of IoT devices and streamers. Sure you can manually whitelist one-by-one to get problem apps like "Amazon Shopping" to work on your android phone through pixelserv-TLS, but honestly that's a waste of time. In the previous SNB forum, the Diversion thread contained DOZENS of people complaining about "Amazon Shopping" not working on Android/pixelserv-TLS, and many man-hours were wasted trying to discover the correct whitelist-host combination to get it to work.
Meanwhile, disabling pixelserv-TLS prevented those problems from occurring in the first place.