I guess our point of disagreement can be illustrated by a metaphor. The fountain by which the SBC churches were watered was their seminary, which is clearly Calvinist in their theology.
No, it can't.
Secondly, the SBC was not made up of only those grads. In fact, not all in the SBC approved of the abstract articles for the school, but since there was a larger body of Calvinists than nons, it passed. However, the school did not speak to nor for the SBC's theological stance. To presume such ignores history and the very founders themselves.
However, let us also note that not more than 50 years (give or take) later, the tide turned pervasively to a Non-Calvinist view. In fact the next SBC Seminary obtained (SouthWestern 1907) was not Calvinistic. So in your logic, this is now the SBC's theological stance and has been for over 100 years, yet it is not.
Your biggest problem to overcome is that the SBC was NEVER and is never going to hold one particular theological stance. Our roots are not reformed, but it does contain it, just as it does the non-cal as well. No school of the SBC speaks to nor for the SBC's theological stance. This is noted because NO WHERE will you or I find any such assertion.
If I, living in the 1800s during the founding of the seminary, was voting in a pastor trained from this seminary, I would expect that the preacher at minimum hold the beliefs outlines in the Abstract of Principles. Nor would I expect that any professor of the seminary would have taught otherwise, or be allowed to have taught otherwise, without being fired.
With respect to the graduates, that is naive to assume they should all hold, at minimum, the beliefs outlined in the Abstracts. They should know them yes, and why the school holds to them but that does not necessitate everyone will embrace them. The fact is, and you know this as well as I do, not all hold to the views they taught from colleges they receive their instruction from.
It seems spurious to me to make me say that the seminary spoke for the SBC.
Yet that is exactly what you 'are' saying. You are saying that since the Seminary taught a Calvinistic view, the SBC was itself also Calvinistic. And that my friend, is silly.
Nevertheless, the founders, in the 1800s, are the builders and not the building. And the materials they built with are most certainly Calvinist teaching.
Um, again.. you ignore the FACT that not all the founders were Calvinistic, and some in the SBC were against the Abstracts. Yet since the SBC did have more Calvinists than Non-Cals at the time, it passed. But again, not 50 years later the next seminary was not Calvinistic.
However, the historical truth is that the SBC has NEVER held to any specific theological position. That is just one mountain you can not move.