It's only year one and the first two expansions that are free. There are incidental things like strikes, Gambit, Gambit Prime, and public events etc. that have been unlocked regardless of whether they are from Forsaken or Shadowkeep. This is so New Light players don't get walled off from group activities. The game was structured so that new players aren't gated behind the story or level caps so that friends who come to the game can join their other friends and game modes from day one.