SpaceX has consistently launched ~90% of the mass to orbit for the whole planet Earth over the last several years[1][2]. There's no one else who could more credibly make such a claim.
1: https://officechai.com/stories/spacex-launched-85-of-all-glo... 2: https://www.nextbigfuture.com/2024/05/spacex-launching-87-90...
While true, this is insufficient to make the new claim credible. If the proposed satellites only weighed 100kg and remain on orbit for 3 years, to keep a million up requires:
(150 metric tons/100kg) = 1500 satellites per Starship launch
1e6/1500 = 666 launches per MTBF (3 years)
666/(3 years) = 222 Starship launches/year
This is significantly higher than even the current cadence of Falcons.If the proposed satellites are to be 1 ton, the required launch cadence would be ten times higher.
They launched a grand total of ~10k starlink satellite, there is a long road between 10k and a million.
Musk would be "the most credible" at claiming he'll have 1000 trillion dollar by 2050, it doesn't mean it's credible at all.