The goal isn’t for them to defeat the Russian army. The goal is to create chaos. If they, for example, start shelling Abkhazia then the Russian military would have to respond, thus either starting another mobilization or drawing resources away from Ukraine. Sure the Georgian military might get rekt, but that doesn’t matter to the beneficiaries of the war - they are far away and making a bank.

Plus it would likely help to further dissent within Russia, especially among the younger generations.

Also, while Turkey and Israel may not directly intervene, I would still expect them to be selling arms. Never let a good crisis go to waste if you can make a buck