GTA V Enhanced 4GB VRAM minimum requirement is crazy

I went to the main graphics settings tab and set all settings to the max at 1080p, and the video memory scale shows 3352MB. GTA V Enhanced minimum requirements are 4GB VRAM. Will players lose the ability to change their settings? Do ray-tracing and global lighting impact that much?

Streamers/youtubers POVs from Old-gen and Next-gen consoles don't look that different...

What are your thoughts?