No. The problem was in the 70s, with single strand solid conductors which were legal for only a few years due to fire hazards. Multi-strand aluminum is still used all the time. The single strand can work itself loose if installed quickly/without proper care due to expansion and contraction, it's not a concern for multi-strand. Single strand is also ok for a dedicated line to a single appliance / load, which is what these lights would be.
There is functioning aluminum wiring all over the place in america, still operational to this day. I just has problems with overheating and catching fire if the load is too big. If you know the load will never change...