I for one, didn't have the same problems you had with him, but I do agree the praise he gets does seem way overblown. I buy him as an older bats and was intrigued at seeing him portrayed differently on screen- so it was a fresh take, but to proclaim him as the greatest Batman of all time- I'm just not there yet. I honestly think time helps to really shape opinions and the more we see of him the better we'll be able to really judge him against the others who have played Bats.
I"m excited to see where Ben goes with the character but I wonder for people who have a problem w/the main characters how that shapes your viewing experience. Lex was my main problem character and he single handedly brought down the entire movie to me. I can't imagine someone feeling the way I felt about him for one of the main 3 (Supes, Bats, WW)- that must suck. Hopefully it's not too distracting for you and u still can enjoy the movies.
Greatest Batman ever or Razzie award? Lol