Dude, this is exactly what you are doing. You have wandered into the fediverse that welcomes everybody and you are upset that not everybody agrees with you on everything and that justifies you being a dick. You are exactly the thing you are hating on in your head canon self righteous hero narrative.
Take this moment to reflect on your first instinctual mental response. Is it “but that’s because I’m right”? Think about this and what it implies.
Zigbee door/window sensors are like €3 on AliExpress. They are easy to install and work fine imho.
If you pick a ZigBee device and don’t try to power a refrigerator or a washing machine with it, it probably doesn’t matter much. Just get some reliable brand, Sonoff, IKEA, something, for wall powered stuff. Battery sensors are fine OEM from AliExpress. I’d advice against anything WiFi that requires a cloud connection, as most of them do, but that is my personal preference.
Idk, but I’d expect all sensors to degrade over time for different reasons and especially if they are not cleaned and maintained regularly.
I’ve got an optical that is recommended to replace after ten years. I find it a reasonable investment.
Companies go out of business all the time and others decide to sunset systems in use so customers are required to upgrade despite it is still working. So yeah, be realistic about expectations for any external service you decide to invest in.
Edit; and some things like smoke detectors do in fact have a life span after which they are degrading. Ten years is normal for a smoke detector.
Mint has not been the new kid for ten years plus. The first iterations of Mint was in 2006.
Mint is the kid that everybody likes despite not even sharing any interests.
There are terrible people everywhere and in particular everywhere online.
This is why I would never be bothered moderating and I am reluctant to release anything to the public of what I do for my own enjoyment. Cheers to moderators and people that post their art and comics and other stuff online.