My argument to that would be that the ruleset encourages aggressive turtling as opposed to sweeps to get back on top. The ground game of most decent judo players is much weaker in comparison just due to the nature of the focus in training. As i said earlier they might hit that takedown but you just placed yourself in the position of the superior grappler. The pins are fine but nothing worse than a good BJJ player can also do. I definitely agree a good level of takedown is needed though.
You mentioned earlier you are 300 pounds. You are almost 2 of me as I weigh about 170. I would probably not engage in takedowns with you either unless I knew you well and that I could trust you to take me down safely. That may be why people don't generally play on the feet with you. I think you would find a 300 pound wrestler or BJJ person might be more willing, but there are not many of them out there. If you were my size I guarantee you would have a similar experience as I have that people will wrestle just as much as pull guard.
No argument that the takedown is very important in grappling. I don't pull guard unless I am massively outweighed or working on seated guard. I prefer body locks, singles and generally chasing the back to land an easy takedown that is gentle for everyone involved.