The Japanese transcription in that link can be misleading because it seems to redact the manner he speaks. (They do this kind of editing a lot when they transcr

The Japanese transcription in that link can be misleading because it seems to redact the manner he speaks. (They do this kind of editing a lot when they transcribe dialects.) Here is a recording of how he speaks: https://youtu.be/zz3tuIbYvmY?t=60 https://youtu.be/zz3tuIbYvmY?t=60 - he has a grandpa-like way of speaking to some extent, but I don't think it's age as much as it's dialect. Many younger people with his dialect speak similarly. For example, どうや and 何や are perfectly normal for a 20 year old from the region to say.