To be fair to Howie, he's been stockpiling draft picks while getting a team to the SB (which they probably win on a decent field). And he stockpiled young DBs this offseason, hoping his veterans could give him one more season.
But the day of reckoning has arrived, all the veterans fell off the cliff at the same time and the kids weren't ready for prime time. On offense, good question who thought Watkins would rebound.
Real problem was Howie mortgaged the future for the big run and simply didn't have the cap room to keep key players or add FAs, Seumalo and Hargrave were big losses. Couldn't buy a starter caliber LB, S or WR3.
The collapse is actually a good thing, it was coming at some point, now he can clear house, eat dead money, bring in a lot of youth - but if you keep Siri, you need more coaches like Stoutland who can coach up young players.