I think usually something like that is intended to as a counterweight, to prevent power from centralising.
However, to prevent the scales from tipping too badly, a sufficient majority in parliament can override the veto, and I believe the party that's pushing this (Georgian Dream) has enough seats to be able to do this.
(Caveat: I'm not Georgian, so this is just based on somewhat above average interest in politics and in the country, following my local news.)