I was wearing HanWags, three season boots.
I now wear shoes pretty much ll the time apart from in snow.
The weather has changed in Morocco in the past 25 years. There always used to be snow in the Atlas all year round but more recently there has been less rain and thus less snow so it hasn't lasted beyond May. I don't live there now so I can't tell you for sure how it is. I'd be surprised though, if you encounter snow.
If it were me I'd wear shoes. If you prefer boots, I'd advise a non GTX pair if you have them, otherwise your feet may get too hot.
Another place to visit in the Atlas is Telouet, ancient home of the Glaoui family. Try to read "Lords of the Atlas" before you go - you might find it in Morocco but it is banned there so you may well not.