I didn't. The battery complaints were way overblown. All the tech reviewers came out of the gate ready to find something to criticize, and that was it. It was basically the spec-chasing press writers pushing that narrative, "the 12 Pro Max lasts so much longer on one charge, who would ever want this mini instead?"All accurate, but you forgot probably the biggest deal knell to the mini line, the fact that it was the same thickness as its larger brethren and thus had substantially worse battery life. Apple basically asked people who wanted smaller phones to make a bunch of compromises the rest of the line didn't have. I'd have happily spent more for a Pro phone (I still miss my XS's telephoto, and I mostly got the XS in the first place because it was the smallest option available.) but I got the 13 mini this year because I want to hold onto a small phone as long as possible, despite the tradeoffs.
I won't pretend that the mini's battery life was exceptional or anything. The 12 mini, in particular, wasn't great. But it was what I'd call "good enough". And the 13 mini is actually pretty decent. No worse than my iPhone 7 was. And everybody was fine with that.
Once a year or so I go on a trip and take a portable battery pack with me just in case. No different than I see people with their honking-large Pro Maxes tethered to an Anker brick around town every day anyway. But for the other 51 weeks out of the year, the 13 mini's battery is good enough.