I’m not sure it is better. IOS and Android get a major release annually, but bug fixes for serious issues (especially security patches) often come within a small number of weeks or even days.
With SFOS there are no bug fixes between releases (and Jolla have stated they have no intention to move to such a release strategy), so on their target of one release per quarter, you have to wait at least 3 months for a bug fix for even the most serious show stopping issues (e.g. Android network connection failures) or even years (GPS on XA2, for example).
How is that better?