Is double cleansing really necessary?

My eldest, who is very interested in beauty, says that double cleansing is a must.

Well, I don't really have much interest in beauty...

I'm someone who thinks it's not good to irritate the skin too much...

If I don't wear color makeup or anything like that, isn't double cleansing unnecessary?

Do I need to double cleanse even if I only apply sunscreen?

I'm curious, beauty experts.