Everyone has his own ideas of risk vs reward. I agree with the above idea that you should use some common sense and not over-do it. But:
Lots of guys think taking safety measures is a sissy thing to do. Not a common sense thing with them. It is something else going on. You see it all the time with some folks, even on here. Just how it is.
EG some people refuse to wear seat belts. I remember when they came out, one lady said she would not wear the shoulder belt because it would give her breast cancer. That was her excuse for not wearing them.
You have all those guys skiing "out of bounds" on the back slopes and having to be rescued at great cost of money and risk of rescuers' lives. But some guys keep stepping over the fence to the out of bounds area anyway. I don't understand that, but it is what it is.
People have died in RVs and "house trailers" from propane explosion/fires. It is no joke if you know someone that happened to. Batteries may be a lot less risky, but people are not stupid (mostly). They can decide what is worth what risk.
The OP asks a proper question--what is the risk? Once that has been established, each person can decide what to do, depending on his assessment for his situation (or for his DW and kids if involved)