No, it's a warning that your OS/hardware cannot effectively run the latest Ps. You need to check your system requirements. If you can't afford to upgrade and you are getting your work done, you are not forced in any way. Your customers likely don't care what you use as long as you meet deadlines. Adobe is improving their professional grade software and they have to require systems that support it.
CC 2018 could run on this, but not CC 2024
https://helpx.adobe.com/photoshop/system-requirements/earlier-versions.html
Multicore Intel processor with 64-bit support
macOS version 10.13 (High Sierra), macOS version 10.12 (Sierra), or Mac OS X version 10.11 (El Capitan)
2 GB or more of RAM (8 GB recommended)
4 GB or more of available hard-disk space for installation; additional free space required during installation (cannot install on a volume that uses a case-sensitive file system)
1024 x 768 display (1280x800 recommended) with 16-bit color and 512 MB or more of dedicated VRAM; 2 GB is recommended*
OpenGL 2.0-capable system
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