Yes Samsung removed the other nibs which gave a different feel when writing.
To be honest I've never had to replace mine as they don't tend to wear out !
There was some discussions on forums about using other nibs from previous note phones and some did say the ones they had with their N10 worked fine.
Current Phone >Samsung Z Fold³ 5G.
Previous Phone > Note 20 Ultra 5G SM-N9860.