“It’s completely optional to your experience but does grant you access to some benefits if you do decide to participate.”
Is inconsistent with
“Having an Avalanche Apex Connect account is not required to play Generation Zero, but you won’t be able to utilize Assignments.”
Keywords here being:
“It’s completely optional to your experience”
“you won’t be able to utilize Assignments.”
Assignments will probably be a good part of the returning users experience for a long time, and thus you WILL be missing out of parts of the game if you opt out.
In another way:
You will miss out on experience unless you get a limited account.
Hence, these statements are contradictory.
A more correct statement would be:
“If you want to use the newly released assignments you need at least the limited account in our new account system”