I try to CW what I think is appropriate. I do not want to overuse CW's because then people click right through them and see stuff they actually don't want to see. This is happening to some of my friends and it's kinda bullshit tbh.
Yes my take is "it's compassion and being considerate of others to /not/ tag your shit excessively" when it really don't need a tag.
Maybe that's too spicy for you, idk.