How is it weak? Oh cause you DO NOT LIKE IT! Just how many ships do you think they have?
The fleet was never huge and its obvious to anyone who cares to look that the Fleet in TFA was not very big....
AND most of it was
destroyed in TFA.....and you think its a good idea to take whats left of that fleet and use it to nuke some Star Destroyers?
The Alliance fleet reorganized into the New Republic after the end of Galactic Civil War and saw massive downscale (90%) under the Military Disarmament Act. The tusk of system defense and security was handed over to individual planets and sector.
During the events of the TFA, the bulk of the fleet was stationed over the NR Capital and was destroyed with it. We see part of the fleet going ka-boom in this scene:
AND we are told in TLJ...that the remaining ships that could have helped did not answer the call......
Its a perfectly logical answer .....you just cannot accept the fact it does not sit well with you. I can bring up, as stated many many times before completely illogical stupid things in OT and PT...that everyone here would defend to the death because they accept those films as the perfect embodiment of youth.
There is ALWAYS someone who creates a new battle tactic and surprises the enemy.....to continue with my example previously....prior to WWII no one had thought to use airplanes on suicide attacks on the scale the Japanese did....
IF you need another example from history...9/11...prior to THAT no one had used commercial airliners as missiles to attack civilian targets.
AND we clearly see the improvements to the original At-AT in TFA in response to a clever young pilot names Luke Skywalker figured out he could use some flimsy wire to trip up a gigantic mechanical tank (why had that not been used before????) ...oh and then they magically exploded with a single hit...
My guess is the resistance...what is left of it....will not be able to pull that trick again.
