Well, I would not call 300W sensible. I would call 450W insane
So yeah, 300W is better, 200W would be sensible. IMHO
But that also tells that gaming GPUs are pushed really far and competition in high end is going to be expensive. So the high end is not anymore everybodys busines. We have now Ferrari, Lamborghini level GPUs that are not sensible any more, unless you want to use as much power as possible and want to pay as much money as possible. Nvidia 4070 and AMD 7700 or 7800 are the real high-end, with everyman's power usage and everyman's high-end prices. (not counting the least gen GPUs in this list than are or should be the bang for the buck option...)
That $1299 sound very plausible to Asus TUF 7900XTX, most likely even more than that. How much is Asus 4080 TUF OC? $1500?