That shouldn't be a justification if the person doesn't actually live in the state anymore.
I have bank accounts in states I haven't lived for decades and that hasn't been any issue. Heck I even autodeposit my salary (from California) to my primary bank account in a different state, out of habit.
(It's good for credit rating to keep long-standing accounts open, so that's why I never close accounts if I move.)
My wife and I moved overseas around the same time, filing one CA non-resident/partial year filing. In subsequent years, we only filed IRS returns with the foreign earned income exclusion, etc. and had no further issues. It was the other, ongoing treasury department reporting requirements that were a pain, not taxes per se. We eventually moved back and had another CA partial-year return to start things up again.
We even used a trusted relative's CA address as our mailing address for federal tax filings and US financial accounts we kept open while abroad. We did let our CA drivers licenses lapse while getting new ones overseas.
https://www.ftb.ca.gov/forms/misc/1004.html#D-Incentive-Stoc...