I don't profess to be an expert on the series as I've only played 20 hours across both games. I feel that is enough to develop an informed opinion, but take this with a grain of salt.
My experience in both games boiled down to ADS, bullet sponge, ADS, bullet sponge, repeat. Like I said, if you enjoy the series, more power to you. I found the gameplay loop stale.
Which is perfectly fine, I only had issue with you looping in "The shooting is boring" with "Arguing from a pure mechanical basis". Everything else I agree with (Shallow RPG elements, ect) and I like the franchise.