Not taking sides but, as I am not a "real" photographer, it happens sRGB serves my simple purposes exactly.
No criticism of that from me. For many photographers, sRGB is just fine and dandy for all the reasons you give. Furthermore, if one doesn't use colour management then sRGB is pretty much essential, as most monitors (at the moment) are roughly sRGB and most applications and devices will roughly default to sRGB without any colour management.
I work with a photography club and spend quite a bit of time explaining how to cope with colour management to photographers - often very good ones - that find colour mangement very hard going (I'm not suggesting that latter point applies to you!). For some of them, sticking to sRGB will give fair mileage with little if any knowledge of colour science. I do agree with Andrew, and working in wider colour spaces is better for many purposes where output is not limited by standard-gamut, unmanaged monitors.
But if someone is going to write books or blogs, or post videos "explaining" it to photographers, then they owe it to their audience (and to themselves) to make sure they understand it enough before spouting complete nonsense.
