There’s apsolutely NO reason why you wouldn’t allow any text to be used for project titles. This is not the stone ages. Windows 95 is not new technology. We have already discovered fire. There is NO reason why people cannot name projects whatever they want to call them. You realise women can vote now right..?
Actually the restrictions are Windows and Linux file and folder name restrictions, which are exetensive:
What characters are forbidden in Windows and Linux directory names? - Stack Overflow