I think this is completely misguided. An equivalent GPU as in the ps5 is reportedly an RTX 5700 XT ~$200.
The RTX 4060 Ti ~$400 or RTX 3080 ~$450 is comparable if you want 4k gaming, but since most people don’t have TV hardware suitable for 4k gaming it’s a dumb comparison unless you include the $2000 TV in addition to the cost of the console. The TV alone compares the cost of a competent 4k PC rig before you consider the $500 console, multiplayer subscription cost and higher price of games so unless you’re part of the niche that has a very high quality TV already, the claim that console gaming being cheaper seems mistaken.
Sure you can get a cheap 4k TV way less, but without a good refresh rate and response time it’s not suitable for gaming. $2k may be high, I’ve not been in the market super recently but it’s certainly wrong to say an entry level 4k Samsung from Costco is suitable for gaming, the response time isn’t close to give the right experience. Same logic as setting graphics to 4k and playing at like 15 fps on a computer on a dog of a GPU.
A computer does need a monitor, and honestly a decent one does cost often upwards of $300, but smaller size without any of the bundled processors etc make it way cheaper than a TV that can do the same.