Hackintosh will survive. For at least 2-3 years, intel Macs will continue to be developed and sold. For at least 5-7 years, those Macs will continue to be supported by macOS revisions.
During that time, the PC industry will make their own transition to ARM based hardware, because (let’s face it) the entire PC industry consistently takes their lead from Apple. Windows for ARM already exists, and just a matter of time for Microsoft to make it an officially supported release (ie for the mainstream). Same with a Linux, with most major distribution having ARM releases.
This is when those mighty talented members of the Hackintosh community will figure out what it will take to turn commodity ARM motherboards in ARMintosh (or ARMacintosh) systems - the preponderance or proprietary Apple chips will make this more challenging, to find functional equivalents on the PC side, but I am confident that it can and will be done.
This transition will allow both our platforms to make a clean break from the past, and start fresh - with the possible promise of significantly cheaper systems, with seriously better performance. Just wait for intel to release their own ARM chips.