For phones 5+ years of updates is good compared to the alternatives, and is why I have one. For a computer, on the other hand, it’s just not very impressive. Perhaps FairPhones come close (don’t know how long their software is supported but their selling point is longevity), but their specs aren’t that impressive. On the flip side you get something repairable.
MacBooks are often built better with higher quality materials than many other laptops, but it is essentially a computer. Most computers that have high enough specs will always run the latest version of most Linux distributions or Windows barring any need for weird drivers from the past century. Feels a little iffy to have a perfectly good computer that won’t update software anymore just because. Up until recently you could just install some Linux OS on your old MacBooks when it went out of support but honestly I don’t know whether you can still do that after they started making non-x86 stuff.
With all that said, haven’t seen many laptops physically outlive MacBooks’ updates. With the exception of some ThinkPads and possibly some XPS models. Plastic laptops with plastic hinges tend to struggle keeping up, especially if the display is on the larger side. A large gaming laptop living the life of a typical MacBook, going to cafes and university in a backpack every day is probably gonna have more stress on hinges etc.
As for HP I have only heard bad stuff about them for the last 10 years or so. Don’t think I’ll buy stuff from them due to their evil printers that won’t scan without ink etc.
Not many specific recommendations here but just some observations I have made. Hope it’s helpful.
There are very affordable g-shocks with multi band, using radio signals to accurately set the time every night with an atomic clock as the source. I mean if accuracy is an issue.
The solar models also charge using sunlight and fluorescent lights but will still last about 1-2 years in darkness. Regular wear will always keep it charged.
Not to say an Apple Watch isn’t right for you. Just stating that non-smart watch options exist for those who just want to tell time, date, weekday, accurately with added stuff like alarms and stopwatch etc.