No capture screenshot feature on iPad or MK

I utilize it often on my MacBook so I was disappointed to see this basic feature not included in such expensive devices. The touchscreen would enhance the feature imo too being able to just use my finger instead of mouse. If you know of any similar methods for being able to do it please share I'd greatly appreciate it.

Yes I know I can take full screenshots and crop- the point is that 200 dollar android tablets can do it and this shit costs $1800. Get it together Apple. ok done ranting.

This is what I'm referencing if you aren't familiar: https://support.apple.com/en-us/102646