Yeah, as far as I can tell I would lose my Dutch citizenship. The one thing that makes it different is that I'm now married to a Dutch citizen (the one we're applying for), so that might be grounds for keeping it. Since this is a pretty particular case, I might have to ask this question to a Dutch immigrant lawyer.
In case it's not possible for me to get naturalized, we would still have to wait for the date in Section A to become current in the long run, right? Does "current" mean the date of NOA1 of when we filed the i130? With the date on Section A being 2022 still, and us filing in 2023 and as far as I can tell that date going up in time pretty slow, I have a feeling that could still be a couple years at least.