It’s the same as with Linux, GIMP, LibreOffice or OnlyOffice. Some people are so used to their routines that they expect everything to work the same and get easily pissed when not.
You also need a guide to get going in PS, its just a different App but fulfills the same tasks
Something I use a ton: smart objects, smart masks, smart filters. Non destructive actions where I can still edit the original and have all previous items applied in a separate file or view in real time.