Well yes but it’s very easy to stumble upon things that are completely different to what you wanted to find. I was googling mythology once and I’m pretty sure I stumbled upon porn. So when it comes to sensitive material there should be warnings
Violent and upsetting images in films have age ratings and content warnings so why shouldn’t internet posts. Exposure to things is still exposure.
The extent to which trigger warnings are used is ridiculous and stupid but the actual concept of them has been used in tv and film to protect and inform people about the content I.E to keep kids away from violent or sexual content.
Scenarios are different but the principle is the same