First clear one thing that at present what is your link building strategy, I mean what DA or PA sites are you including in your link building? and why are you so considered with DA or PA metrics?
I'm asking this because your post has an exceptional case if you're website's DA or PA score is not lower than 80 than you must only post on sites which have 80 or above DA or PA score. But it is said that sites with 30 or above DA or PA scores are good for submissions. It doesn't mean that if a site has a low DA then it has low quality.
I'll say this is just a game of spam, external & internal links. I'll suggest you don't be so considered over DA or PA scored sites and just focus on quality & relevant niche sites which are beneficial for your business website. Post on sites which have high quality external links & or inbound links.
