It’s been on the cards for a while. When I started all you could get was mech mods but the batteries where low powered devices and on my Screwdriver device when the atty had a problem it would go pop and a internal spring would shrink.
Now you have more powerful batteries extra care is needed.
When regulated mods appeared and even simple devices like my old ego pen it made vaping safer.
It could have been a damaged battery, a bad atty or the device was dirty and lack of maintenance.
I really can’t see the point of mech mods now when you have so many good regulated devices.
Problem with tube mechs also is that they are sealed bottom is often screwed on so any battery explosion is going to be bad. (Remember the bit in Armageddon about the firecracker in hand or closed hand?)
I always check my batterys for any break in the wrap. Careful use and should be fine, only mech I have is a geekvape Athena squonk and always keeps ohms sensible.
Had a smok tube mech and that was a solid bit of kit prob get bad explosions out of that lol got rid of it tho.