We also create a notice in the data document section It’s the recommended way by WordPress that doesn’t make your options table bloat.
The extension only supports to save all settings in an array (like the theme options theme_mods_theme-slug) to avoid bloating database.
But it's an exciting idea, and I will create a feature request for the developer team to research and support this case.
I would really appreciate if we could have the option to save as array or string. When we release new versions of our plugin, sometimes we run database updates which are MUCH easier when values live inside single cells, not arrays. I understand WordPress is trying to set a standard to not overload the database. But if you know what you are doing, then there should be an option to have it another way.