People have different genetics. Your genetics determines how well your body can naturally detox and eliminate heavy metals.
Some people can naturally eliminate 90% of heavy metals, while others only 10%. If you are the 10% type, you will be screwed with diseases and conditions for life unless you develop some detox protocols.

If you develop a solid detox protocol, then one of the upsides is that you don't have to worry about eating toxic food as much because you now have a regular and easy way to detox it.
It's basically a must for all people because you can't avoid heavy metals in food and water even if you are extra careful. The solution is not to eat perfectly, but to develop a good detox protocol.
If you gonna eat a big meal of fish, just take a teaspoon of zeolite alongside it to mop up the heavy metals.

No
Those vegetables are filled with toxic chemicals to boot. And probably so is your green tea.