94 days (they said 2252 hours in the article) on 28,000 mAh? that means a more normal phone with 5,000 mAh would get nearly 17 days of standby time? I've never tried not touching my phone for a full day but I don't believe that, not with Android running. Maybe if it was untouched and in airplane mode lol.
They're inflated number for real-world use, but years ago I did a pointless experiment with some friends where we posted a Motorola Android phone to each other to 'map' the postal network. The phone was packaged up with everything that could be turn off, only GPRS data enabled and took GPS reading once a minute (or every five minutes when stationary) and posted them to a web server. Even after two weeks it had well over 50% of its battery left.
It is amazing how long a phone lasts without many apps installed. I put Lineage with gapps on my old pixel 3 and didn't install much. I think it would last a couple weeks if I just changed it up and left it alone.
My brick has pretty good battery life too. I've owned it 20 years, never had to recharge the battery. Doesn't really do much, but otherwise can't complain!
I have a Cubot King Kong 5 Pro. Yes, it's named that.
I haven't even had the endurance to test its battery life. Thing lasts forever if it has no SIM card / WiFi / BT and might as well be a MP3 player that lasts you weeks.
edit: I turned it on 5 days ago after this comment and turned weefee/BT/NFC off. 85% remaining.
When I'm hiking I only use my phone to take photos and to check the weather and maps (+ airplane mode when I'm not checking the weather). My Pixel 7 easily lasts half a week to a week with that usage.