There isn't any actual problem. People who want to use the character can still do so. If you're referring to > was not added to JIS or Unicode until much later

There isn't any actual problem. People who want to use the character can still do so. If you're referring to > was not added to JIS or Unicode until much later then TFA is simply inaccurate; 𡚴 has been in Unicode since 2001. More importantly, replacing the incorrect character (instead of supplementing it) wouldn't realistically have made it possible to add it sooner. They didn't really know what they were doing back at the start.