The TIE fighters being there and Millenium Falcon dropping in out of no where (with accompanying “WOOO!” except it’s not Han saying it this time) to save the lone ship flying in a straight line (like in a trench) as the last hope in destroying “old Death Star tech” just before it fires on the Rebel base, is an element taken straight out of ANH and mixed into the recycled TESB battle of Hoth.
I agree that at first I had attributed the scene to that same particular trope but after looking at it in a new light of realisation I am sure this is Luke’s final trench run recycled for this scene, or at least parts of it and the Falcon coming to the rescue out of no where. We just needed Rey to shout over the radio “You’re all clear Finn. Now let’s blow this thing and go home!” and there would be no doubt about it 😉
Except this doesn’t happen in the film. The Falcon appears and draws the fighters off long before the weapon even starts firing and Finn does his Kamikaze run. The speeders are flying in all directions to evade the TIE’s when the Falcon appears.