Microsoft: We can’t spy on your usage when you use wordpad, use O365 instead! (guessing since MS recommends using O365 Word in its place).
TBH, I haven’t used wordpad since Windows 98. Not saying others don’t use it, but Notepad++ and a myriad of other options are better anyway.
On a default install on NP++ you can only save as rtf, but there are addable plugins that give some rtf functionality. So as a direct answer, no, it doesn’t, but it can.