I am a software developer from Mumbai, and once I started working with teams in other time zones it became obvious that writing good code was only half the job. My accent is part of who I am, but it did occasionally get in the way.
Jay was never trying to get rid of it. The goal was clarity, not erasing where I am from, and that distinction mattered to me. He gave me things I could use in ordinary situations, which in my case meant standups and code reviews rather than formal presentations.
The moment I remember was a video call with the wider team when I realized I had gone the whole meeting without anyone asking me to repeat myself. That had not happened before. My speech has improved since then and so has my standing on the team. If you work in tech across countries, he is worth the time.