Moto Z Play a bad idea to buy now?

Wife really needs a new phone. Current Moto X Pure is going on 2 years old and has evolved into a piece of dog shite. She picked it out because the bamboo version looked pretty. Probably not the best way to pick out a phone. She's not what I would call a power used. NetFlix, Facebook, web browsing, and Simpsons Tapped Out is about all she uses it for besides the normal phone type things. Biggest complaint is battery life. Best in class battery life has me looking at the Moto Z Play. Only thing that makes me hesitant is that it's a phone from 2016 that already has a replacement. Doesn't look like the new version is T-mo compatible as it' a Verizon exclusive right now. "Newest version" of Android isn't that big of a deal for her so that isn't much of a problem with an older phone but the lack of security updates for her Moto X Pure is pretty startling. When I check it last night it says the security update is from Dec 2016

Anything else I should be looking that has great battery life? Contemplating the OnePlus 5 for her which for *me* would be a better phone but my wife would rather have more battery than a faster/sleeker phone.