When they've actually tested it for 50 years I'll believe them.

Not Philips no, unless they have changed suppliers?, who ever supplied them their recent SMT lamps, these barely do 6000 hours in service!, I’ve had 3 die early on me!, and we’re not allowed the Dubai ones in the west!, so unless they have a different supplier for the filament LED, my money is still on Sylvania and SuperTrend!

The problem really is, how they want to prove the lifetime claim. Sure, many wear mechanisms could be accelerated, many could be extrapolated (smaller drifts observed over shorter time, assumption made on how these will play out after the 50 years), but even for life rating below 20k hours the LEDs are facing many issues where neither method was able to predict them.

Plus if the lanterns are to be designed as not user serviceable (so needing a qualified electrician to fix once it fails), standard "xxx% survival" metrics becomes nonsense (regardless when that percentage is to be a bit above 70% or what), but a kind of "xxx ppm failure rate" or a MTBF metrics, same like with any other equipment (like heaters, fans, HVAC, circuit breaker panels,...) should be used. And when compared to that, the LED lifetime is barely fraction compare to what is common across such devices, far too short for being a "not consummable" sort of a thing.

Like I said, come back in 50 years. TBH I'm glad I won't be around to see what lighting becomes by then.

Cheerful soul, aren't I 

These appear to be a re-branding of the Dubai lamps, now made available in other countries and with slightly increased output, and approximately halved lifetime.

I put 10pcs of the Philips Dubai A60 60W-equivalent lamps on lifetest 3.5 years ago and they've now clocked up over 26,000 hours.  They're still at 93% lumen maintenance and based on the rate of depreciation so far, look as though they will exceed 100,000h life to the L70 point (except 1pc which has a gas leak and is dropping somewhat faster in output).  The electronics is all running cool enough that I don't yet see signs of it failing any earlier, but only time will tell on that.  Next update in another 8 years time!