Hey there, I grew up in Portland and I understand what you are talking about. PDX has many LFL like this as the city of Roses loves to read. Arguing here is not going to get you anywhere. Anyone commenting here is not likely to see your nomination and vote on it. Reach out to people in Portland, I know there is an active community. Ask them what language they use for their nominations.
This forum tends to get preachy with people making statements saying they would or wouldn’t approve and don’t know the submitter nature area.
People here are trying to help, but they are looking at it through their own lens vs giving general information. DON’T GIVE UP. No decisions are made here in this forum unless it’s from an employee Anything else is someone’s personal opinion.
If you believe in your nomination make sure you get the best photo you can for the main and a super wide angle for the 2nd photo to show it’s not on PRP.
Pro tip, I’d read this article Road verge - Wikipedia
I’ve used some of this information in my supporting info as well.
Also, just be aware, Portland is different that other cities. The area you are talking about in the City of Portland is public land via several ruling by city counsel. Look it up. It’s there.
Overall, good luck explorer!