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You might be killing your PlayStation 5 by using it vertically according to one Internet article (Unproven rumor)

The PS5 is marketed as a device you can use either horizontally or vertically. The console is so massive, finding a spot for it can be a puzzle on its own, so thankfully at least we have the option of using it vertically or horizontally, according to Sony. But some hardware repair experts say that using the PS5 vertically is a guaranteed recipe for disaster, one that could kill your console.

According to Sony officials and most technology websites, you can use your PS5 either vertically or horizontally, the device has been designed for it. Tech website Fossbytes puts it this way:

Eventually, it doesn't matter how you choose to put the PS5; whether you put it in a horizontal position or a vertical position, the console will work the way it is supposed to. According to Yasuhiro Ootori from Sony's design department, it doesn't matter how you choose to put the PS5; the stance, whether vertical or horizontal, won't affect the cooling.

But 2 years in the console's life, hardware experts from console repair shops are telling a different story:

According to 68Logic, a PlayStation scene member who owns a hardware repair shop in France since 2010, using your PS5 vertically can damage it permanently, and he's seen the result first hand with his clients' consoles.