That is one cute bird. Pionus are supposed to be one of the quietest parrots, if there is such a thing.
My white capped Pionus, Max, (not the same bird as the one in the video here) I've had for 26 years now. And yes, they're relatively quiet. No screeching, but he will sort of 'bark' at the mailman and if he sees strangers outside. Maybe a good 'watch parrot'? He is for us.
They can talk, at least this male white capped does. Not a great deal, not like my Gray anyway. But he says hi, hello, how are you, what's new, how ya doin sweetheart give me a kiss, I taw I taw a puddy cat, I did, I did see a puddy cat!, and sometimes will even add the 'Bad ole' puddy cat!' as well. He says a few other things. And it's apparently never too old to teach them something new. He just started whistling about a year or two ago.
But perhaps the best thing is that they're, well, 'reserved'. He will sit on my shoulder all day long, or until he gets hungry or thirsty. Then he'll go off to eat, and then come back after a while.
He watches TV, too, but I haven't noticed any particular pattern to his watching likes or don't likes.
Like my Gray, Max eats all kinds of people food. Pizza is a big favorite, as well as hot dogs, hamburgers, pretty much anything that he can pick up and eat. Unlike the gray (who will just grab stuff with his foot), Max will pick up his food with his beak first, then transfer it to his foot to finish eating it.
However, we also had a female white capped, who never said a word of people language, but made lots of quiet-ish bird noises. She liked to watch basketball. She would climb down from her cage, walk across the room, climb up onto a chair and sit at the top and stay there quietly, watching the TV with the basketball game on it. After the game was over for a while, she'd climb down, walk back to her cage, and then go sit there quietly. She watched intently, I have no idea why.
She was a seed junky that we had purchased from a regular pet store at the age of two, and we were never able to completely get her off the seeds. She lived to be 20. Max is now 26, and has always been healthy.