TIEW, yes of course the local air superiority above the Reich proper was gained by LR escort fighters, I'm not quibbling about that. But long before then the Luftwaffe had to withdraw an enormous amount of its fighters (and bombers, converted to nightfighters) together with the complementary flak batteries (think of all the 88's that could have been aimed at Russian tanks rather than adding to the ever enhanced barrage over Germany). That NAZI air power withdrew to Germany to wither and die there meant that Allied armies could advance from East, South, and West in great measure unmolested by it, and that the Wehrmacht retreated unprotected by it. In the end it is boots on the ground that bring victory (a point that Harris might indeed have had issues with) but they did so under generally benign skies. To a very great degree that had been achieved by the Bomber Offensive, by Bomber Command, and by the USAAF.
As to bombing accuracy, it was appalling by day and by night (though especially by night) but that just came with the limitations of navigation then. Blackouts, obscured skies, moonless conditions, all made for difficulties in finding a city, let alone a target outside it. The Nav had a sextant, an API, a Drift Sight, and forecast winds that were largely guess work. He couldn't even simply tell the captain to follow the stream ahead as it couldn't be seen, other than when those below were silhouetted by the target's fires. A lot of cows died in the service of the Fuhrer as a result. Later on radio and radar aids helped it is true, but only when security allowed for it, and even then enemy counter measures made their use questionable. Carpet bombing, Area bombing, call it what you like, it was simply bowing to the inevitable. Bomber Command was not so much a big stick as a cudgel. There was no precision about it. we could find cities, we even had targets and aiming points within the cities, and yes the Pathfinders could finesse those in the midst of a raid, but in the final resort Bomber Command destroyed German cities because that is what it could do.
The result was that on D-Day the assaulting troops could be told, "Don't worry about aircraft overhead, they will be all ours!".