I didn’t say we should deliberately try to not be understood. Natural changes by diffusion will happen. And that is authentic. I don’t know how to articulate this well. But when I hear a fake accent, it just jars me. Bollywood is the best example. When I hear of course, the course part makes me want to throw up.
I can only speak for myself. Haven’t had problems making myself understood.
Also there is a marked change in the young folks (for me that is 28 to 32) from India who r in the workforce. They speak with their natural accent. Very clear. But also distinct from local accent. You r correct. The locals don’t care. It is the south Asians who r so self conscious abt their accent.
Be yourself. Be natural. As u stated the accent changes gradually and automatically. No conscious effort need.
Bhoojlo aami ki bolte?