@Djozz and Agro, I would advise you to see how a laser light is usually built by looking at styropyro’s video:
Most laser lights don’t use thermal paste to aid in heat transfer, there are no direct thermal paths for the lasers diodes to dissipate the heat effectively, most laser modules are press fit into the casings with no solder or thermal paste to aid in thermal transfer. Finally, most laser heatsinks aren’t directly connected to the hosts.
That means while the light itself doesn’t get very hot, the laser diode does.
How do I know this?
Well, I have friends that really like high power lasers, and since they know I’m quite knowledgeable about lights, they came to me when they had problems with them. 
Anyway, I opened up many laser lights, even custom ones, and man, I was so disappointing with the crappy heat paths that the lights provided, and worse, how the laser diodes themselves are heatsinked.
Even something like a Convoy C8 is built way better in terms of thermal path vs most diode laser lights.
And the thermal design of SMD 3535-5050-7070 LEDs with thermal pads are leagues ahead of almost all diode lasers.
TLDR: Our lights, and LEDs+MCPCBs, are very well designed to get the heat away from the LED as quickly as possible.
Laser diode lights and the diodes themselves, on the other hand, are designed pretty badly in terms of getting the heat away from the laser diode, meaning laser diode lifespan is much lower than conventional LEDs.