There's a difference between good attention and bad attention.
Likes are cheap; they literally cost nothing. So are message that say "hi", with no indication that they've even read your profile. Logging into a dating app and discovering thousands of people -- all of whom seem to know only that you're female and therefore approve -- is as soul-sucking as getting no attention at all.
I was very popular on online dating sites, because I knew how to talk to women as if they represented something other than a place to put my dick. All of the women I spoke to were incredibly discouraged by quality of attention they received. Ask your sister what fraction of those stacked-up notifications consisted solely of the word "hi".
Most women seem to get tired of the attention that merely tells them that they're attractive. It's an ego boost for a while, and I'm sure some retain it, but it's the kind of thing you get inured to, and you want something else.
The experience for women is different, but not necessarily better, and the things that a man might crave simply because he doesn't receive it will feel empty to a woman precisely because she does. There's a cultural asymmetry that doesn't lead either side to what they're after. But men can do a lot better simply by treating women like human beings, and understanding that they've got problems different from yours.