I changed because on a Non Imm O you can stay 90 days then one extension of 30(?) days. You then have to leave the country. With a one year extension of stay, I can remain for 12 months and just do 90 day reporting.
I've been using Non Imm O multi entry based on marriage for the last 9 years, up to this year it has never been an issue. I have recently converted that to a one year extension of stay. When I have to leave I will buy a multi entry re-entry permit from immigration before leaving. I already have medical insurance which covers Covid-19, so all I will need to do is apply for a CoE, a flight and an ASQ. I do not envisage any major problems just a financial loss.