Version 26 of Photoshop is explicitly compiled for ARM64. A "portable zip" would need to include not only the Photoshop.app bundle (approx 4.5GB) but also a virtualized runtime environment, the Adobe Licensing Service, and font caches. Most files claiming to be "portable ARM zips" are either:
To ensure a smooth installation and operation of Adobe Photoshop v26 on your macOS device, make sure you meet the following system requirements:
: Official versions of Photoshop v26 (pre-26.1) have already been identified with severe vulnerabilities, such as "Use After Free" (CVE-2024-52997), which could lead to arbitrary code execution. Unofficial versions cannot be updated to patch these security flaws.
A robust, open-source image editor available for free on GIMP.org. Do Photoshop have portable version? - Adobe Community