I'll give you my understanding, as best I can. But this is a monster of a web they have spun, so not that easy to understand.
Sugar companies are directly responsible for much of the destruction of the everglade, through over development, some 6 million acres are used for sugar plantations, and they are polluting the waters with their phosphorous fertilizers. Almost all of the destruction that Florida has spent billions on attempting to fix, is a direct result of fertilizer run off. Yet they can do nothing about it, because the sugar companies have also bought the federal government, and contribute way too much in tax revenue, and political contributions for the feds to intervene. (I should say sugar company, as in singular, as in Flo-Sun inc.) They simply have way too much political influence. Something Clinton had a chance to stop in 1993, but political contributions kept him quiet, while VP Gore was suggesting the opposite. Meanwhile, over the next 10 years, the price of sugar in the US, right where it was mostly grown, doubled that of the global market. DOUBLED!
Florida wants the sugar companies gone, but cannot accomplish that with the company having so much political sway. You get the money coming from PETA and HSUS involved in the form of contributions, and now buying the sugar company out, since they are in a weakened state due to the shortage of the same phosphorous that's polluting the waters, is the easiest way to do it, securing 187000 acres of land for expansion. 1.75 billion spent to do so.
But, HSUS and PETA do not just GIVE their money away, they want favors in return. Enter the Python ban. Now they have to come up with ways to ban the pythons, in order to secure those large donations to accomplish their ultimate goal of everglades restoration. What better way, then to blame the people, even though they know full well the entire thing is blown way out of proportion, that the problem isn't near as bad as they've made it to be, and knowing full well the Burm population is the direct result of a natural disaster, and not from the people who will suffer directly from the passing of this law.
Yes, I know, I'm a conspiracy theorist. I always have been.