All old games were hard and tedious. Off the top of my head, I remember the zork series, sword of fargoal, joust, and bart vs. the world. None of which were made by Japanese companies. Also, Wizardry was developed by Andrew Greenberg and Robert Woodhead who are Americans.
You specifically singled out Japanese games and labeled them as repetitive and exhausting. Am I saying you're a racist? I don't know you well enough to make that judgement. Anyone can make honest wording mistakes and create sentences that don't accurately depict what they're trying to get across. You might benefit from choosing your words more carefully. As far as racist beliefs go, "<race> makes boring video games" is pretty low on the Hitler scale, anyways.