Ted Ginn has played in 48 games in his career (starting 35), in those 48 games his QB during 19 of them (whom you conviently ignored) was Chad Pennington. Chad happens to have the highest completion percentage in the history of the NFL (Tony Romo is 8th by the way).
Feel free to check it...
http://www.pro-football-reference.com/leaders/pass_cmp_perc_career.htm
Ginn's best year (2008), which you atttribute to the quarterbacking of Lemons, Chad was actually his quarterback. Chad led the league in completion percentage that year at 67.4%. He completed at least 30 passes to 6 different receivers (and 50+ to 3). The only Dolphin that year in the league leaders in drops is, you guessed it... Ted Ginn. He was tied for 19th in the league with 6 drops. No other Dolphin is in the top 50.
http://sports.iwon.com/nfl/stats/passesdropped.html
While I am not stating that Pennington and Romo are the on the same level. To state that Miami hasnt had any good QB's during Ginn's time there is stupid (Chad has a career .538 winnning percentage, a 2-4 postseason record (Romo 1-3), thrown for 18,000 yards, and "technically" is the most accurate passer in NFL history (at least has the highest completion percentage on his 2,500 career passing attempts). Last year Pennington and Henne had 28 dropped balls on 525 attempts combined. Ginn dropped 1/3 of that total (9) on only 78 attempts. So I'm thinking Ginn clearly had a bearing on the stats for QB's those years for Miami, not the other way around.
By the way good job of mentioning Pat White and his whole 5 career attempts in your list of QB's Ginn had throwing the ball at him (post 115). Why not throw in Ronnie Brown he had 6 attempts?