No he hasn't. We start all dogs in the house for the first year. Then over a period of time move them to the kennels. Newfies are people dogs, but if you spend a lot of time with him he will be fine. Just take it slow. A dog run and nice house will be perfect. Do not tie him up. These are working dogs first. I would say train him to pull a cart and earn his feed. He helps out, doesn't destroy your house and every bodys happy. Plus no more fur everywhere.
Some dogs just dont get house training. Our labadoodle never did. She was the only one though.
The dogs are inside the first year for housebreaking, basic commands and bonding. Then outside they go.