I have no knowledge or skill about tuning, tensioning, or playing drums and I am not sure if I completely grasped every detail in bdp24's post, but I just stumbled upon a video on youtube where a drummer with probably more experience than most of the people on the forum talks about tuning his drums. I guess they can be tuned. Again, I am posting this just for anyone who may be interested how someone who apparently knows what he is doing is doing it and not for arguments about semantics.
https://www.youtube.com/watch?v=nd9fcmBLbDQ
prof and aailenk,
Although I am keeping my mind open that some of these tunings may make a difference as I did get fooled into thinking things could not matter just to find out that they did, I think your posts eloquently address a problem with this particular thread. Much earlier, I also asked for examples of things insinuated in OP and I did get the answer. However, I decided not to pursue the discussion and gave that answer benefit of the doubt that it was me who could not understand rather than that the answer was a bit too vague and complicated. That does not mean that tuning techniques mentioned do not work, but simply that they seem way too vague to me to give them a shot. If they do, indeed, work, I am honestly glad that someone is benefiting from them. Aurally or financially.