TagRemovePreprocessor.remove_cell_tags for empty tags

[mzechmeister]

I have many untagged cells ("tags": []), which I want to removed when exporting.
(It is quite some work to tag them all, in particular since the tags are cumbersome to edit and reccognise in jupyter lab 4.)

Is it possible to remove tags cells without a tag? I tried --TagRemovePreprocessor.remove_cell_tags='{""}' without success.
Or could there be a feature .keep_cell_tags?

If there is no current solution, this would be feature request.