TBH Im not sure if this is a "growing up in a good area" vibe. But over the last decade or so I have had to slowly learn the people around me have no sense of shame. This wasnt their fault, but mine. Society has changed and if you don't adapt you'll end up confused and abused.

I am not saying one has to lose their shame, but at best, understand it.

Like with all things in life shame is best in moderation.

Too little or too much shame can lead to issue.

Problem is no one tells you what too little or too much actually is and there are many different situations where you need to figure it out on your own.

So I think sometimes people just get it wrong but ultimately everyone tries their best. Truly malicious shameless people are extremely rare in my experience.

For the topic at hand I think a lot of these “shameless” contributions come from kids

The adaption is going to be that competent, knowledgeable people will begin forming informal and formal networks of people they know are skilled and intelligent and begin to scorn the people who aren't skilled and aren't intelligent. They will be less willing to work with people who don't have a proven record of competence. This results in greater stratification and harder for people who aren't already part of the in group to break in.

Shame is a good thing it shows one has a conscience and positive self regard.

Just like pain is a good thing, it tells you and signals to remove your hand from the stove.