The Roseville one is pretty popular, haven't tried the one in Folsom.I'd be happy to share what I'm finding in Yuba City, just ping me with your email.

What one phrase in this article sets the tone and (conveniently) ignores anyone who has made their wealth in real estate?

I know this is not the popular opinion on BP, but this is the reality if you make investment decisions based on the metrics you are prioritizing. 

When I asked about doing cost segregation for my SFR my accountant at 1800 actually sent me an article from Biggerpockets which was encouraging.

Here's an article with additional FAQs on cost segregation studies that you may find helpful.

The zoning is less permissive but the neighborhood has become increasingly popular to both renters and buyers.

I updated my blog article with a snapshot of Killeen fourplexes. 

Yes - its based primarily on the property + borrower (credit and liquidity, experience is a plus, but 1st timers are generally ok with some DSCR Lenders, sometimes with a bit of a leverage limit)Check out this article - https://www.biggerpockets.com/blog/dscr-loans-what-are-they2.

I've known about Bigger Pockets for several years and have enjoyed learning from articles and podcasts.

I suggest reading this article below. https://www.biggerpockets.com/blog/core-four-real-estate-team