Except that fire ant stings are guaranteed to be painful. Not all tick bites are guaranteed to give you Lyme's disease.
About 15 years back I was living in a rural area of New Hampshire and got the "bulls eye" mark on my leg. Never saw the tick in this case but ticks and bites were common around there.
I promptly went to the doctor to get a course of antibiotics and never had further health issues.
Now I'm in rural Texas and surrounded by fire ants. I need to rethink my life choices.
Just because there is not scientific evidence doesn't mean something doesn't exist.