This is some pretty trash reporting, which is odd considering that Eurogamer usually isn't this bad. But their source for this is a Twitter thread from Luckyy10P? The dude is widely known as the biggest clown in the Destiny community, and every piece of "news" he covers is greatly exaggerated drama that only like three players ever complained about, but he presents as some massive community-wide issue.
Nobody's buying and then cancelling their $100 preorders just to keep one of the most mid guns that Bungie has ever released. Tessellation is not that good of a gun. Maybe it will be good when the catalyst is released in The Final Shape (though you won't be able to even get the catalyst without owning the expansion), but right now pretty much every trusted Destiny community member is confirming that the gun serves little to no real purpose in the current sandbox.
If Eurogamer wants to cover nonsense from Luckyy, they should be inquiring about his child support payments.
Bungie 100% can remove the gun from people's inventories, but they won't. They're usually pretty hands-off on stuff like this, because your inventory is accessible cross-platform, but your purchased expansions are not. So they'll leave the gun in your inventory because they know that the possibility exists that some people may change their minds on their original purchase and re-buy the expansion for a different platform.
There are stretch goals that go all the way to 65 million, and then it stops there. Since it's obvious those goals were reached a LONG time ago, does anyone know if those are already in the game?