Concerning the OP, I'm sticking with CO2s. Mostly because I run tubeless and barely use the CO2s. Honestly I can't remember the last time. But likely 2-3 years ago (10,000+ miles). I've got nothing against the mini-inflator other than I wouldn't trust that it would still have a battery charge in it after not touching it for 2 years.

I have many battery powered devices like bike computer, lights and Di2 shifting. But those are things I interact with on every ride and it works for me to charge on a regular schedule. An inflator would stay tucked into my down-tube storage. I get into that so rarely, I wonder why I carry any "emergency" gear at all. So, I don't want to have to get into that every few months (?) to recharge an inflator that I will at most use once every year or two.

An inflator doesn't give me any advantage of CO2. If it is smaller than my 2X CO2 cartridges and valve, it doesn't matter because I already easily fit the CO2 into my storage. Is it lighter? Maybe, but not enough that it would matter to me. But I'm not going to argue that it may be the best solution for others.