If you’re talking about the VESA mount, there was a lot of tech that went into that that explains the price, including sensors that auto-rotate the display when the display is rotated. It wasn’t just price gouging.

They are good enough for the vast majority of their customers. You have to remember that the vast majority of laptop users only use their laptops for email, social media, and occasionally word processing; they aren’t using Baldur’s Gate III or Final Cut Pro or some other app that needs the extra RAM. You don’t need more than 8GB of RAM for that.

All mobile phones use radios; if they didn’t, then they wouldn’t work as wireless phones. There are country-specific regulations on the power and radio frequencies used by these phones, so they don’t generate excessive heat or ionize, both of which (but especially ionization) would be bad.

Contrary to what the health influencers on Instagram say, commercially available mobile phones have zero effect on human health. That said, apparently the iPhone 12 was caught violating France’s limit on how much power its radio was using. How it took them years to notice is not mentioned anywhere.