Why wearing pads is considered immature? Why people keep sharing these stereotypes and shame others?

"Only beginners/little girls and pre-teens wear pads. Grown women choose tampons and cups "
Like...

Modern pads come in different shapes and sizes literally. They got muchhhh thinner after the modern technology. I don't want to make everyone "love" them.

However, having a preference and "hating" aka shaming are to different things
Updates
27 d
Guys, wanna say that for some countries that's different. Bc people there use pads as often as other products or even more often. But in the US, Germany and a few others the shaming is real :/
Why wearing pads is considered immature? Why people keep sharing these stereotypes and shame others?
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