I dunno... I don't plan ever to buy a sous vide, or to replicate what they do using other equipment. But weren't they invented by professional chefs?
As for the Instant Pot the author doesn't even SAY it's a pressure cooker. The one thing people who love Instant Pots usually say first of all ia that it can cook relatively complicated dishes on a weeknight. That's because is a pressure cooker. And people seem to feel more comfortable with them than we did with our mothers' stovetop pressure cookers because we feel they're safer. And probably they are. I wouldn't get one because I have plenty of free time.
The convection toaster ovens may already be out of style. At first they were very expensive. Over a thousand bucks. And you can't made a real pizza Napolitano in your regular oven. But now, it seems you can buy an indoor pizza oven that heats to 800 degrees, and it costs less than $100. So that seems to be a game changer. Your Napolitano will be ready in three minutes, they say. I am REALLY tempted.
Oh, and my home oven doesn't have a convection feature. I assume that's true for many people...
The Food Processor: Definitely worth having. I in fact have two: big and small. I rarely use the big one nowadays, but if I had a family, or if the guests I used to entertain weren't dead or much less healthy than once upon a time, that would be different. The small ones are consistently helpful.
I haven't made bread in decades, so I won't be getting a bread machine. And even if I decided to bake three times a week, I don't think I'd feel I needed one. Popcorn popper? Any large pot with a lid will work just fine.