GP was talking about 圏点/傍点, not dakuten. Their point about katakana was also correct - normally a word is either written in katakana or it isn't, regardless of

GP was talking about 圏点/傍点, not dakuten. Their point about katakana was also correct - normally a word is either written in katakana or it isn't, regardless of emphasis. Using katakana for emphasis happens but it's not common, and would get tiresome very quickly.