I will answer for you. It is 100% possible to live entirely off solar you own as many people do it day to day and have no grid connection at all. It doesn’t even take that much solar if you don’t waste a shit ton of power like most people in the west do.

No, you can't just live off solar - you need batteries, and a LOT of them. I have 42kWh of batteries to go with my solar, and that would last me a day and a half off grid, max, unless my solar was absolutely cranking every day. At the moment in Winter I'd have to triple my solar panels to be able to go off grid even if the sun shined every single day and they worked at their maximum efficiency, which is not how the weather works.

Can I slow cook a roast or turn on a gaming PC with a big beefy GPU? Can I power my AC? No. That doesn’t make what I can do any less valuable.

It means that they have you by the balls though. It means that you're not even remotely close to being off grid. Living like a homeless person by candlelight every night isn't what people mean when they say they want to go off grid.

I can survive just fine with the power grid cut off.

I don't want to just "survive", and I'm not alone in that.