That article is from 2017 assessing coverages in 2016. Where do you see it's from last year?
I would be interested in seeing the latest data.
Here is an article from PFF this year assessing schemes from all teams last year:
Every NFL team has a defensive identity, often a combination of philosophies from past and present coaches. Here's how each of the 32 squads projects to stop offenses in 2021.
www.pff.com
There are many teams on whose base scheme is Cover 1, which is man coverage. Most teams also blitz and/or switch up coverages on 3rd down.
The Browns were literally the only team in the entire league who's base was a zone coverage, with a 3rd down mentality of...sitting in the same zone coverage.
Based on this data, it appears what Woods is doing is not modern NFL defense. I'd actually argue it's the exact opposite. He sits in the same vanilla cover 3 for 95% of the game, regardless of opponent and, to this point, regardless of personnel. Maybe this made sense last year when the roster was devoid of talent on defense, but that is not the case this year.
Overall, I believe the defensive scheme should be based on the personnel. Pigeon-holing players into playing "your" scheme 95% of the time is not a recipe for success, and the results we've seen thus far reflect that. Moreover, our impact players have not made an impact to this point. Denzel just had his worst game probably in his entire life. John Johnson and Troy Hill haven't been any good. All the Linebackers have been lost in coverage. Honestly the coverage in general has been so bad that even the DLine, which has been the lone bright spot for the defense, can't get enough time to get home for sacks.
Good coaches adapt to the talent they have. Adjustments need to be made. This scheme and refusal to mix things up is not working for this team. When the Houston Texans are moving the ball at will on you, it's time to look in the mirror and re-evaluate what we are doing here.