The Mini and Mini 2 both have 2 cell batteries and have a flight autonomy of around 25 minutes. they have a weight comparable to Anafi (250 vs 320) and the batteries are 2200 vs 2700mah 7.2v so they have about the same mAh / gram compared to Parrot Anafi and both use 2 cell lipo batteries.
I am not saying you are wrong, I respect your opinion even though I hate you for me spitting tea all over my 15 inch retina MacBook Pro when I was watching the end of this video [MEDIA=youtube]dPJalINmRF8:595[/MEDIA] XD, but if you are correct in suggesting that the problem lies with having a 2 cell battery with that flight time, then the Mini and Mini 2 batteries should be developing errors within 20 flights as well, wouldn't you agree?