It is mental effort to have to recognize what is triggering you and to take positive action to fix it. The radio is more symbolic of having to do it 40 times a day across all the things you find triggering, or having to find ways to live your life outside common neurotypical ways that take more energy. For example, finding dishes clinking to be really triggering means I have to use ear protection to unload the dishwasher, and if I can’t find ear protection that I have to spend time looking around for it, and now dishes have taken me 3 minutes longer than it would someone else. Over a dozen instances a day of something like this adds up