I'm looking for Youtube videos on Yom Teruah/Rosh Hashanna today and I am ignoring any that appear to make a case that the term "Rosh Hashanna" is somehow sinful. Why? Not because I agree or disagree, but because it's just another pointless controversy among the controversy addicts of the Messianic/Hebrew Roots movement. There is a scriptural basis for calling the day Rosh Hashanna. Whether you think it's a strong basis or a weak basis is irrelevant. God didn't command that we call the day one thing or another. Get over it. Stop being offended by imperfect labels.
Most importantly, stop being an offense to your brothers.