Morocco in particular would benefit from synchronizing time changes with Spain as a major trade partner.

Spain will likely drop DST in a year or two, like most EU countries, but it’s not clear which side it will “land”. In this context, maybe Morocco is using this leap forward as a lobbying effort to nudge Spain towards the timezone it prefers.

Aren't they dropping it tomorrow?

Not afaik - the EU recommended to stop switching at some point, it did not mandate when or how. Spain will switch as usual this weekend.