"Think tanks" always have a "house" PoV. Like many con-sultantancies.
They are not independent from the people who pay their bills. The question you always need to ask is "What is their house PoV and who funds them?"
Now a key question would be does this one allow staff to have positions that are contrary of its house PoV?
If they do, then the people who fund them should realize that can happen. Personally I think if you're pushing X agenda 99% of the time the contrary view makes you look less like a payed shill for company A, or B.
Advance notice of an official paper that a funder won't like is acceptable, provided the funder can't say "No, you won't publish this, we will shut you down if you do." That's not advance notice, or an opportunity for comment, that's censorship.