Wait? Endangering planets is too "dark" now? But planets blow up or get threatened in practically every Trek movie. Earth comes under attack in movies one, four, eight, and ten. Soran was going to destroy some poor inhabited planet in Generations. Ceti Alpha V turns into a hellhole in Khan. The Genesis Planet goes ka-blooey in Movie Three. Etc.
Threatening planets is a time-honored space opera tradition, going back to E.E. "Doc" Smith at least. Hell, Star Trek was inspired by Forbidden Planet,
which ends with the planet blowing up . . . .
This is hardly new to the Abrams films.