It may mean the snakes dont have to travel too far and may mean a slight increase for a year or so but the snake population tends to self regulate. We do have a few poisonous types - most are not aggressive if left alone unlike some snakes say in India or constrictor types that will actually take people. I have had a couple of eastern brown snakes go between my legs while walking over the years - you learn to just freeze and they go on their way. The last time in particular I saw the snake turn and look up at me - our eyes met - it wasnt love at first sight but he knew I wasnt looking to hurt him. My wife accidentally kicked one once at it just carried on. They are beautiful really as long as you dont step on them or poke them.
The coral snakes we had in Louisiana are the most venomous, but thankfully among the most docile. Water Moccasins aka Cottonmouths have a reputation for being aggressive and I have encountered a few that lived up to that reputation.