Four reasons the protein belief exists:
1) Bro science
2) Dogma
3) Steroid abusers need more protein because their body is able to partition it towards muscle building in greater amounts than natural lifters
4) "Too much" is always better than "too little" so people like to play it on the safe side and eat more than normal
just in case
I don't want to look up the studies right now so I might be slightly off in my numbers, but I believe that the numbers are 0.8g-1.2g per kg of bodyweight is the range that has held up to scientific scrutiny.
So for you at 214 lbs, the numbers that science tells you for protein would be a range of 77g to 116g per day. You can choose to believe what a magazine or gym bro tells you instead, but understand that they are telling you that because they heard it from a gym bro or magazine who heard it from a gym bro or magazine who heard it from a gym bro or magazine etc etc etc.
I believe the highest scientifically supported number for a natural lifter that I have seen is 1.5g/kg, so that would be 145g for you. The fact of the matter is that our body can only synthesize a certain amount of muscle per day, and adding a ton of protein consumption on top of that usage just flat out does not help.
That being said, I still eat around 180g per day at 165 lbs
. I use reason #4 above.