i cannot disagree with this more... this is speculation at best, and the kind of "blame-someone-for-my-hero's-demise" mentality that ran Jimmy out of town altogether...
let's not forget... the Miami defense was anywhere from below average to downright embarrassing for 12 years between 1984 to 1995... 12 YEARS!.... i remember each one of those years very vividly...
it was refreshing as can be to finally see Miami play some defense in 1996... and they are STILL a good unit to this day largely because of Jimmy (5 years later!)... you can go on and on about failed picks... but Gardener, Surtain, Madison, Taylor and Zach were not... regardless, let's imagine Yatil Green doesn't rip his knee, let's imagine Cecil Collins (say what you like, he would have been very good) could control his hormones... those are Jimmy's fault?.... perhaps, only because he took the risk....
let's not overlook the injury that ultimately eliminated all mobility with Dan: no, not the achillies'... the final straw was the heel/foot break at Indy in 1996... if you fail to see that *gasp* Dan Marino was not the same quarterback after that game, that's fine... if you wish to give JOhnson absolutely no credit, and suggest he did nothing but lean on his assistants, well ooooooooook, super....
but blaming Jimmy Johnson for "ruining Dan's last two years?"... ummmm.... that's a slight stretch... Father time ruined Dan's last 2-3 years... not Jimmy Johnson...