If we can be honest with one another though, your comment reads to me as not just insincere, but condescending. This might be cultural more than ..'genderal' - I was hearing echoes of 'thank you so much! You're so welcome!' familiar from even the most mundane interactions in the US. (It's quite jarring when you say 'thanks', for having been sold something in a shop say, expecting to leave it at that, to be told you're so welcome.)
What I was intending to get at above was that if I have a duty to communicate with you as you'd like to be communicated with(!), then surely you would also want to reciprocate? If there are just these two 'communication personas' on the team, and they're evenly split, isn't it a lot of effort for nothing, aren't we better off using what makes most sense to us personally, since just as many others agree as disagree anyway?