The speak English to those that speak with an accent can come about because some people have a very hard time with accents. Especially as they get older. My mom has a very hard time understanding a someone from the Middle East who is speaking English. It’s not that she is racist it’s that’s she older and her ears are wearing out. My dad is the same way. My mom is more patient when dealing with people who have a strong accent. My dad… less so.

I worked with my dad and got him to understand that it’s not that they aren’t speaking English… it’s that they have a strong accent. I at least got him to stop saying “speak English “ . It’s a small step.

My point is: talk to your grandpa and see if he has a hard time understanding the accent.

The rest of it, ask why he doesn’t like travel. Is he afraid of crime or what is it. Maybe you can show him the truth