I wasn't trying to make the argument that "'not meat' doesn't taste as good as 'meat', so don't eat it", but rather "Don't eat oranges looking for apple". Oranges are still delicious, but they're different and comparing them is not the point.
Also, I might disagree with this statement:
> There is nothing special about the taste of chicken or beef other than it is good and you're used to it.
Umami (savoriness) is actually fairly difficult to find outside of meat if you have an even slightly limited diet and some studies suggest it's craved as an instinctive signal of protein (like sweetness and simple carbs), so if you just stop eating meat there can definitely something missing.
(BTW, if you're trying to get off of meat but still have a craving, dried mushrooms and soy sauce have very concentrated umami flavors, and adding MSG can just up the tasty factor in a lot of dishes)