Reinstall? I'm just a poor country boy from Missouri; I'm not sure I know what you mean.
Are you using mods which an update might break? Are you worried that new content like onions and cookware might require creating a new Valheim world to fully implement?

I don't use mods so I can't help on that score. As for requiring a new Valheim world, I would advise turning the automatic update feature in Steam off and waiting a couple of days after September 16th.

By that time, any problems caused by Hearth & Home will have caused eighty-eleven new threads to sprout on this forum. Information on improvements will be much scarcer.

I will re-post to this thread to tell you what I discover.