From: Eagle River, Alaska
The Allied strategic bomber forces were fully committed to Overlord targets in June through August. 100% historically accurate.
And you are 100% incorrect in making such a blanket statement. A quick look at Freeman's Mighty Eight War Diary shows that strategic raids were made against Germany:
June 18th: Hamburg, Harburg, and Hannover
June 20th: Magdeburg, Hannover, Poelitz
June 21st: Berlin
June 29th: Boehlen, Leipzig
July 7th: Boehlen, Leipzig
July 11th: Munich
July 13th: Munich
July 16th: Munich, Stuttgart
July 19th: Augsburg, Schweinfurt, and other targets in southern Germany
July 20th: Leipzig, Merseburg, Erfurt, Gotha
July 21st: Munich, Duren, Regensburg, Schweinfurt, etc
July 29th: Mersebrug, Bremen
July 31st: Munich, Ludwigshafen
August 4th: Hamburg, Peenemunde, Kiel, Rostock
August 5th: Madgeburg, Brunswick, Hannover
August 6th: Brandenburg, Berlin, Hamburg
August 9th: Ulm, Pirmasens, Saarbrucken and other railyards in southern Germany
August 15th: Airfields inside Germany and Holland
August 16th: Oil and airfields in Germany - Boehlen, Zeitz, Madgeburg
August 24th: Brunswick, Merseburg, Brux, Ruhland
August 25th: Rostock, Politz, Peenemunde
August 26th: Ludwigshafen, Gelsenkirchen
August 27th: Flensburg railyard, Emden, Wilhemshaven, Helgoland
The other days were targeted against "Overlord" targets in game terms. Airfields, V-Weapon sites (Noball) and railyards (mostly in eastern France and Belgium - 9th AF took care of those closer to the front).
It is fully justifiable to use the retargeting work around to hit strategic targets in the game if you want to.
And worthwhile to know your facts before writing.