You're missing the basic point that the water bottle is as common in public as cell phones and selecting one that can serve as an improvised self defense tool gives you another option.
Yep!
The bottom line is, one is supposed to avoid trouble, leave when trouble shows up, and have the
mindset and
skill sets to use whatever
tool sets to deal with trouble when no other options are available.
One CANNOT buy "skill and targets". Meaning one cannot buy a "thing" that will automatically keep trouble away, or deal with trouble all by itself.
Another piece of advice if I may, is to not "telegraph" themselves in anything, especially in having "weapons". SouthNarc shares of "3 + 1" in reading attackers. Well law abiding folks should not telegraph either, as criminals have more time invested in "reading" people, places and things". These criminals have all day to study and learn, especially those that have been in "cell college".
This water bottle is a variation of the metal coffee thermos, a proven "tool set" if needed.
Yes. There was more to the fact parents and grandparents, carry/carried a coffee thermos to and from their vehicles at home, or to work, or had one in vehicles, and "always" seemed to be one near at home/work, or "left in a vehicle, be this the family vehicle, or farm/ranch vehicle/equipment.
I work with a lady in her mid sixties, and everyday she carries a Stanley Coffee Thermos into work. She also keeps another one in her vehicle.
She shared her husband once used the coffee thermos to keep a drunk, irate, panhandler from getting into their vehicle, while out of town, when stopped at a stop light.
"He bopped 'em good in the nose, through the lowered window, and he quit messing with us... then the light changed and I took off...".