I see nothing weird here, Microsoft has been punishing OEM manufacturers for bundling Linux (or, more precisely, for not bundling a MS system on the computers they are selling) since at least 1983.[0]

[0] https://en.wikipedia.org/wiki/Bundling_of_Microsoft_Windows

I had to search "developer edition"

https://www.dell.com/en-us/shop/dell-laptops/xps-13-plus-dev...

IIRC with the current XPS range only the "pro" variants offer you the choice of a Linux install.

Used to be dell.com/linux