I need to verify the actual release dates. Let me check: Transformers: Age of Extinction was released in 2014, The Last Knight in 2017. Web DLs are typically available around the same time as the theater release, but sometimes a bit delayed. If the user is referring to a 2021 Web DL, maybe it's pirated or an illegal download site, which I should caution against. Alternatively, maybe a streaming service added it in 2021, but I'm not aware of that. Alternatively, maybe the user is confused about the dates.