Earlier quoted context omitted.
The Nokia 6 was released back in January 2017 and is still seeing major OS upgrades (most recently to Android 9 Pie). I would expect a larger, much higher volume vendor like Samsung to do more than security patches for older phones considering that a smaller player like Nokia can keep up. It isn't a herculean task! Pretty sure my next device will be a Nokia or iPhone due to the long term software support.
>Pretty sure my next device will be a Nokia or iPhone due to the long term software support. Wouldn't rule out Motorola (Lenovo) as well. They are the only manufacturer selling parts for their phones directly, have models in the android one line, and offer bootloader unlock (so you could move to a custom rom once they discontinue)
For Android hobbyists the unlocked bootloader may be fun, but there is no low-maintainance (timely and reliable OTAs without wiping/reinstallnig, etc) OS option if you go that route.