I think it is likely the complete opposite of trouble. It helped them write their comment faster and in such a way that it was easy to understand. This is one of the best use cases for chatgpt. Rather than spend minutes trying to get the right wording, tell chatgpt what you want to say in a few short notes and get a well formed coherent text.
Now if this is a good thing, that’s up for debate - although overall I personally would say yes.
I think the point here is that for a group of people (I would argue most) the primary goal of a comment is to broadcast your ideas, with the language being used to convey them of secondary concern, of which this part could be delegated to AI.
Now if this is a good thing, that’s up for debate - although overall I personally would say yes.
Written with zero chatgpt assistance