Twitter ads are known to be largely ineffective. Can't imagine Starlink investors will be thrilled to see this.
Space-X is privately held, only Elon-friendly investors there.
There's a reason Tesla isn't doing a big Twitter spend right now.
When Solar City was starting their death spiral, Elon Musk and Space X stepped in to buy their debt. Later when bankruptcy was imminent, Tesla bought Solar City to bail out Space X and Musk.