You could be right but I doubt it, otherwise why cancel a product that is still in demand! I believe its because the S-line has more sales & features to offer due to getting more & more advanced every year where as the note features have run its course, due to changing times & the features being updated yearly the note line as reached its limits in creativity, so its become obsolete, hence the S22 ultra just needed an s-pen to make it great.
No company likes to loose money, that's my option.