I don’t think there is anything that can make Intel Macs not obsolete. Embrace it - that’s their charm and you should use them as they were intended to be used, and experience them as they were designed, as artifacts of their time.
No thank you. They can sit in a museum 30 years from now. Today, they are still amazing and productive machines (once you get macOS off them).
Many (most?) Intel Macs still receive microcode updates, Mesa support and recent kernel changes.
The only obsolete part is macOS, which is removable.
I installed CachyOS on my MacBook 16,1, and it feels much faster than with macOS, but the D side is still hot though.