Yea but it also looks the best

box mods overrated haha i got 7 regulated mods guess what all boxes =/ time for a change bring out them old sschool mechs!
Yes and mostly NO.
First you have to understand a bit about MARKETING.
OEM's are in a "bigger is better" war/race to have more POWER when their devices (and most available batteries) simply can't actually provide it.
I have DOZENS of both box and tube mods and none of them 'over heat'. Why? I simply don't drive/push them to the SILLY (and often inaccurate) limits that the OEM marketing/packaging claim that they are able to do!
Keep in mind that even the BEST single 18650 mod is good for ~<=30W TOPS!
(no matter what the silly max power rating in the manual claims!)
Also keep in mind that even the BEST voltage regulator MIGHT be fairly ok/efficient with STEPPING DOWN (Buck) a voltage however stepping UP (Boost) will on the other hand be (IF actually available) generally terribly NOT efficient!
So instead of constantly swapping/charging batteries (wearing out the very fragile battery 'doors' and USB ports) and overheating your MOD's the SIMPLE solution is to use lower mass builds that are higher efficient in converting mAH to vapor.
g.