Yes, you are wrong. Summon (all forms) only comes with Full self driving package currently. It also came with the ENHANCED autopilot package (not "autopilot", enhanced autopilot, but enhanced autopilot has not been sold in the US since 2019.
Tesla has a description of exactly what is included in autopilot vs FSD on their website.
Autopilot is an advanced driver assistance system that enhances safety and convenience behind the wheel. When used properly, Autopilot reduces your overall workload as a driver. Learn more about Autopilot.
www.tesla.com
In case you dont want to click the tesla link for some reason, here is a picture of the relevant information:
View attachment 699403
you mention "everything you read says summon comes with all model 3s" but either you misunderstood what whomever you were reading was saying, or, they did not understand what actually is included.