An old friend of mine was advised to eat more seafood, and she bought fresh Tuna steaks, cooked them, and hated them. The fresh Tuna didn't taste like Tuna from a can. Now I happen to like fresh Tuna and canned Tuna and recognize that they are two very different tastes, textures, experiences.
There are many canned meats, or canned meat products that are almost unrelated to their fresh counterparts. Corned beef from a can, is very -very different from a freshly cooked corned beef, or even a corned beef sandwich from the deli. Again, I think all of these are delightful, but they are different. If you go into one, expecting it to be like the other, you are destined to be disappointed.
I happen to enjoy Spam. Now there really is no fresh equivalent for this canned pork product. Spam is not really a cut of pork, it is lots of bits and pieces processed into Spam, a one of a kind product. The French do some potted meats that get close to Spam, but they are generally grainier and spreadable. Spam is a bit salty, but once you get past that, it is just a unique food product. I know, we really don't like to think about food products, but then what is a sausage, or a hot dog, or a twinky (made sure I add the "y" to that.) I can understand the "it is not like anything else" that is true, sometimes the haters need to overlook their expectations and let the salt, and fat provide joy to their taste buds.