Where did they specifically say that about full pve vs bots or did you just see what you wanted to see?
Here is the link to the official statement if you need it. https://www.ea.com/games/battlefield/battlefield-6/news/portal-101-introduction-to-battlefield-portal
"Playing Portal grants XP and Progression opportunities just like any Multiplayer mode. However, not all Portal Community Experiences grant the exact same amount of XP as Multiplayer.
When selecting a Portal Community Experience, it will either be labelled as “Verified” or “Custom” depending on what its creator chose when creating the experience.
If a Verified Portal Community Experience is chosen, then anyone who plays this experience will earn the following XP and progress at exactly the same amounts as they would in a normal Multiplayer match:
[...]"
If you can create a verified portal experience with bots, then you should get 100% progression, simple as that.
Its an oversight, not intentional, bots were added to backfill an experience not become the experience.
Thats why you can add bots to a verified game, to act as a backfill when there isn't enough players.
And a match with bots filling slots is flagged as VERIFIED. Thanks for pointing out what I demonstrated in the original post.
With the expectation that more players will join, not for you to have your own private pve server.
