Why not just install on an actual x86 chip instead of emulating it?
I would assume anyone using photoshop can afford to buy an x86 pc.
https://www.adslzone.net/app/uploads/2017/01/snapdragon-835-vs-intel-i7-7700k-geekbench.jpg
Shows an i5-6600k is about twice as fast as a Snapdragon 835 on Geekbench.
Near native performance could mean anything from a 1-10% penalty.
It's nice that it is being offered but the majority of people already have an x86 computer capable of running Photoshop and other apps.
They would have to:
1. Choose to buy a computer with a Snapdragon 835.
2. Accept 1/2 of the performance of an i5 or 1/3 the performance of an i7 as acceptable.
It reminds me of a story I read a few weeks ago about prisoners assembling a makeshift computer from spare parts they found and hacking the prison's wifi/computers with kali.
I guess now if they could only get their hands on an arm processor they could install windows and play wow from prison.
Priorities lol.