Yup, all valid points which contributed to me either using ZigBee or designing my own things for WiFi.

The thing with wifi is that it drains a shit ton of energy. A WiFi temperature sensor might last a few weeks or months but ZigBee devices can last years. Of course this depends on what kind of batteries were talking about.

Just bought a Mikrotik LHGG kit for LTE internet and went from about 3-5 Mbit/s down with a TP-link (archer 400 something) to 30-150mbit/s down and much more stable. I’m really impressed with it and WinBox and will for sure have a good look at their switches when it comes to putting up the home network infrastructure. Though, as you said, you need to know what you are doing and need a better understanding of networking but it also gives you a better flexibility and more things that are possible to do.