In a conversation where we are talking about our respective preferences, I wouldn't find such a comment offputting. Outside that context, I might wonder what you want me to do with that information. And especially when such a comment seems to come out of nowhere, it can come across as entitled or selfish in the "I'm the main character" vein.

If you can state your preference without intending to declare it superior to my preference, then I find little to criticize about it. If you don't intend to imply that my liking what you dislike is somehow wrong, then I don't mind.

Stating this kind of preference boldly could be interpreted as trying to be authoritative on the subject, and especially in matters of taste, your opinion is no more valid than anyone else's, nor is it any more important. You might not intend it that way, but I could easily imagine a listener interpreting you that way.

To answer your question more directly, stating a preference somewhat tentatively or meekly can convey an appropriate amount of humility. That tends to make it safer. As with most of these situations, the more your listeners already trust you, the more boldness you can safely get away with.

I hope this helps you somehow. Peace.