>

I didn't know they had feelings! I need to eat more vegetables now.
How the fuck can an organism be sentient if it doesn't even have a brain? >

Um they have brains >

I mean, this is either factually true or not, I dont see how this can be a matter of opinion. >

As long as it's neither proven nor disproven, it's a matter of opinion. 
It is a wrong view on science to think that it's only about facts. It's about interpretation of facts. Some facts might suggest one interpretation and some another. 
There might be facts in OPs favor but the majority is against it. Still, it's not proven wrong just very unlikely and therefore an unpopular opinion. >


The same amount of evidence exists to suggest that humans are sentient as there exists to show that plants are

Do you want to provide any of this evidence?