I see that @tprockow offered a small update back in 2018.
This is a massive thread with so many dedicated developers who have no doubt spent hundreds of hours developing, testing and preparing extensions for Opera that drive new users for you, and make the overall platform better.
Rather than just forwarding dedicated developers here to capitulate about the fact the review process appears to be stalled, please let us, the community, help you to make this process of submitting and reviewing work better and more transparent. Just like we improve and work on code in open source projects, everyone in this thread has a collectively massive amount of experience to assist.
This is not a complaint - it is an offer to help, whatever you need to make the submission and review process more transparent and timely.
For many of us who also submit code for review in other ecosystems with stringent criteria (i.e. App Store Connect), we know the hoops and hurdles - but even then, we're used to getting a review within 36 hours.
If it's a resourcing issue, then let's figure out a way to get more of the community involved and build some kind of open source peer review system. If it's something else that's blocking the review pipeline (or perhaps add-ons aren't part of Opera's broader future strategy?), then please let us all know so people aren't waiting months with no feedback.
Thanks, and looking forward to your reply.