Yeah, that was what the writers thought the audience would buy as the best plan of a desperate, losing military establishment/government: while an apparently unstoppable enemy fleet gathered around Earth to either occupy or destroy it, sneak onto their homeworld and blow it to smithereens.
And of course, entrust the bomb and the key to the whole operation to a despot from another universe who has no loyalty to Starfleet and the Federation at all...because, you know, there's not one trained person in Starfleet or the Federation in general who would be more trustworthy and willing to actually carry out the mission based on Evil Georgiou's intelligence and tactical direction (despite the fact that Starfleet has no difficulty finding military leadership willing to plan and order the operation).
Because, you know, there is no enemy civilization or military structure existing apart from that on the homeworld, and anyway the military leaders of the enemy who were just about to take or obliterate Earth will be immediately demoralized and traumatized, and turn around and go...somewhere harmless. Probably lay down their arms and surrender. Or something.
And then Starfleet can sell all that stolen Klingon underwear for PROFIT!
The writers of this show clearly have taken the measure of their target audience.
And of course, entrust the bomb and the key to the whole operation to a despot from another universe who has no loyalty to Starfleet and the Federation at all...because, you know, there's not one trained person in Starfleet or the Federation in general who would be more trustworthy and willing to actually carry out the mission based on Evil Georgiou's intelligence and tactical direction (despite the fact that Starfleet has no difficulty finding military leadership willing to plan and order the operation).
Because, you know, there is no enemy civilization or military structure existing apart from that on the homeworld, and anyway the military leaders of the enemy who were just about to take or obliterate Earth will be immediately demoralized and traumatized, and turn around and go...somewhere harmless. Probably lay down their arms and surrender. Or something.
And then Starfleet can sell all that stolen Klingon underwear for PROFIT!

The writers of this show clearly have taken the measure of their target audience.