While the post is clearly a shitpost, and the arguments in their provided form are not entirely valid, they could be altered to be valid.

Purpose-built devices will always have advantages over generic “do everything” devices. A modern smartphone can do everything, but you still have MP3/FLAC players, DSLR cameras, calculators, etc. Similarly, a PC can do everything, but there are still TV sticks, gaming consoles, tablets, etc.

PC can’t be as low-friction as a console for gaming. To start playing all you need to do is pick up the controller, press the Home button, TV comes on and you’re back where you left off. All the games in the store are 100% compatible with 0 settings manipulations.

Now, you could build a PC for the sole purpose of playing games on PC, and come fairly close to the experience. But you’re gonna spend more and put a lot of effort into it.
Some issues you might encounter:

• picking and installing the right OS
• hardware/software compatibility
• controller support
• seamless sleep/wake
• lack of HDMI CEC protocol to control the TV

Where’s as console is a plug-and-play tailored experience that guarantees all of the above.

TL;DR: You can’t just plug your PC to a TV and expect the same result as playing on a console. It will take much more work to get there.