For some history, the original DOTA was a custom map in Warcraft 3. It pretty much defined the moba genre. From there lots of clones were created, and eventually some were made into full games. League of Legends is one of those, and became the most popular. So yes, they’re all just Warcraft 3 with only the hero parts.
It’s the trusted platform module which I know almost nothing about but I’m sure is fucking stupid. My monster of a desktop from 2018 also can’t run win11, and the only reason is my cpu is missing the tpm that it requires.