Well, in the Early Intel forum, our max macOS is 10.13 for some and even lower for others (legitimately, as opposed to unsupported installs). While 10.13 isn't a bad OS at all (and the hubs' white MacBook does boot into 10.13), it does hit some brick walls, mainly because Apple screws over older macOS-es via their own XCode. And every time a new macOS is released, more and more systems get tossed from the system requirements.
Again, though, this isn't a MAJOR issue just yet. It's coming down the road and it will happen the moment software like VLC and Firefox stop supporting the early Intel systems. Just like on PowerPC, when those two freebie giants stop supporting your system, you're heading down the road to obsolescence.
Meanwhile, my 2011 mini almost exclusively boots into Windows 10. I rarely if ever go back to macOS 10.13 on there and Win 10 is a pretty good OS in and of itself. Plus, I can play WoW Classic without having to resort to buying a new Mac, as you need Metal on the Mac side to play a "remastered" (barely) game from 2004.
This is somewhat the same in the Linux world, as Linux distros run fairly well on Intel while they suck dog turds on a PowerPC machine. Thankfully, some PPC's have MorphOS, which is a speed demon on that old hardware, but not all. If you still have a G3, like I do, it's just time to make that final stand with it as an OS 9 non-internet workstation...or a 10.4 one because Office 2004 with the docx converter is just that good.
Please send them to a poor, starving teacher like me! Seriously, I can put older hardware to very good use where I am. A G3 is still in use (I bought it just to be a Word/Keynote/Pages station) because I can still friggin' use the thing without throwing fits everywhere.
Again, though, this isn't a MAJOR issue just yet. It's coming down the road and it will happen the moment software like VLC and Firefox stop supporting the early Intel systems. Just like on PowerPC, when those two freebie giants stop supporting your system, you're heading down the road to obsolescence.
Meanwhile, my 2011 mini almost exclusively boots into Windows 10. I rarely if ever go back to macOS 10.13 on there and Win 10 is a pretty good OS in and of itself. Plus, I can play WoW Classic without having to resort to buying a new Mac, as you need Metal on the Mac side to play a "remastered" (barely) game from 2004.
This is somewhat the same in the Linux world, as Linux distros run fairly well on Intel while they suck dog turds on a PowerPC machine. Thankfully, some PPC's have MorphOS, which is a speed demon on that old hardware, but not all. If you still have a G3, like I do, it's just time to make that final stand with it as an OS 9 non-internet workstation...or a 10.4 one because Office 2004 with the docx converter is just that good.
Just retiring two 2011 Mini's and my 2012 MBP 15". The runtime for those systems alone make the transition to M1 even less of an issue. I will continue using my 2020 10th gen 13" for at least 3 years I imagine (along with 16GB M1 mini).
Please send them to a poor, starving teacher like me! Seriously, I can put older hardware to very good use where I am. A G3 is still in use (I bought it just to be a Word/Keynote/Pages station) because I can still friggin' use the thing without throwing fits everywhere.