Yes this is unfortunately true. I went through IGN's list and wasn't too happy with it. It seemed to me that a lot of the games were sort of on there for nostalgia or popularity reasons, and also the ranking of some of the games seemed very off to me.
For example, in my opinion Persona 3 should not have been on the list, it's a good game but not one to be put on a top 100 list of all time. Additionally the ranking of the Persona games on the list is very odd, with Persona 3 at number #47, while Persona 5 is at number #50, and Persona 4 at #13.
Another ranking that through me off was Pokemon Moon/Sun at rank #30 and Pokemon yellow at #4
Just some example of why I don't like the list too much.