Okay, so although this would have been the third time Ive tried to get you to clarify and you still havent...
From what you told me "I just trade, & Ive held for a year". You are what is referred to as a "position trader". (Also, it may be good for you to define what kind of trader you are before you start to develop tools of your trade, for me this was important)
Unfortunately, for position trading it isnt "completely useless", wish I could tell you, you dont gotta do your homework homie :O)
I see your argument however and you will have to do the math and see if it is worth your time or not. But no it is not utterly useless. I don't even swing trade, I'm daytrades only, but when I ever do decide on holding over even a short period of time I check the fundamentals.
Yes there will be times where supply/demand make absolutely no sense based on anything. The current market we are experiencing now is also very hyped. For example, many financial guys valued TSLA at 300 and as of today its trading at I believe 1500. Unfortunately, the hype doesnt always last and when buyers and sellers are more rational youre likely not going to get such exaggerated prices (both highs & lows).
For a position trader, I would suggest you continue to do your research and be aware of what you are buying. There could still always be unforeseen scandals, etc. But no as a position trader fundamentals are a vital component, yes after you are aware of the fundamentals you can place your bets based on what the market is demanding. But always caveat emptor