It's a solution. There are better solutions, and far worse solutions (anyone who has worked to get a deposit back on a college rental has probably developed a few of their own), and most of them are all still fine because drywall isn't (shouldn't be) structural.

Crucially, even if you are completely unwilling to take a stab at a fix yourself, hiring a local handyman to patch a hole via some good enough technique should still be far cheaper in most places than buying a nice new TV.

But nothing is gonna ever beat buying a 2nd-hand framed picture or plaque or movie poster or grabbing a flyer from the junkmail on your porch and tacking it over the hole... And if you're determined to fix holes with a TV, you can probably find one used for about as cheap / free as any of the other choices. Which is what makes this such a stupid example - the cost of TVs, like framed images or furniture, spans from $0 to "as much as you're willing to pay". Hiring someone can also be arbitrarily expensive, but can by definition never be 0. So the comparison is rhetorical trickery and demonstrates nothing.

...other than, apparently, Andreessen's dissatisfaction with paying tradespeople.