Accesability issue with incorect inline styles?

Merged with Inline styles bad for accessibility?.

Im importing an XML feed which has some inline styles. However the styles are written incorrectly and dont actually do anythin开发者_运维百科g:

<font size="5"> text here </font>

I know that in an ideal world the xml feed wouldn't container inline styles or I would have a way to strip them out but thats not possible. Is their any accessibility or other issues with this code that doen't seem to do anything?

Thanks