You actually have a lot less to worry about if ordering directly online from a big name store (Costco, Best Buy, Amazon, etc.) and especially if you live in a major metropolitan area.
If your TV is shipped through UPS or Fedex, good luck. Chances are it travelled hundreds of miles, loosely packed (meaning it wasn't secured to a pallet), on the back of a truck or inside a train container. Who knows if the arrows on the box were pointed up?
But with the big name companies, their online orders are fulfilled by a 3PL company who receive the TV's direct in palletized bulk shipments from the manufacturers and directly move the TV's to customer from orders received over the internet. And you'll get it delivered to your living room, usually free of charge. Typically, in a major metropolitan area, the 3PL company deploys delivery trucks direct from warehouse, and they're usually providing delivery services for multiple retailers. The delivery guys bringing you your Costco TV is probably delivering TV's from Best Buy, Amazon, Walmart, Rakuten etc. TV's on the same route. One delivery service serving multiple retail companies. That's how 3PL works, at least in major metropolitan areas. If you live out in the boondocks, chances are you might be out of reach of these direct from warehouse bobtail delivery trucks, so your mileage may vary.
But from the consumer side of things, this works to your benefit because your TV is handled less times between the time it was manufactured to the time you take possession of it. It's transported and handled by professionals, people who actually know how to lift and move a heavy item without dropping it, and yeah, it's usually free of charge.
IMO, ordering a TV online and getting it shipped is a no-brainer. If I need two people to carry whatever it is I'm buying or it doesn't fit in the back of my SUV, I'm buying it online.
IMO, it's a complete pain in the butt to buy a large bulk item from a retail store and try to bring it home