I agree mate, but I'm going to expand on my previous answer about his time in the 80s and early 90s at Forest, while not as successful as previously is still sign of a great manager.
I think you can make a good case that to still be competitive with Forest in his last 10 years there, still a consistent top 10 team with a decent cup record getting to semis and finals and picking up a few trophies over that period is still a hell of an achievement considering the teams he was up against. We all know about Liverpool then, but people forget how good Howard Kendall's Everton team were between 1984 and 1989. FA cup winners in 1984, runners up in 1985, 86 and 89, Cup winners cup winners in 1985, league titles in 1985 and 1987, runners up 1986, league cup runners up in 1984. Add in Manchester United (FA cup winners in 1983, 1985 and 1990, league cup winners 1992, Cup Winners Cup winners 1991), Spurs (FA cup winners in 1981, 82 and 1991, UEFA cup winners in 1984), Arsenal (league winners in 1989 and 1991, league cup winners 1987 and 1993, FA cup winners 1993) and you can see what he was up against.
All of those had better resources at the time than Forest, and were generally in the top few pretty consistently over that time. You can also look at other teams, like West Ham who had a pretty good team for a couple of years in the mid 80s or Watford around the same time to show how competitive the league was then. But teams like West Ham, Watford, Villa, Southampton and QPR didn't do it as consistently as his Forest team did. That to me is an amazing achievement. He had his team consistently punching above it's weight over a good period of time, competing against teams with far better resources and frequently out performing them, enough that people at the time didn't really appreciate what he was doing so still don't do it even today.
Even though he wasn't the same without Taylor and not as successful it's still a huge achievement in my opinion that gets overlooked at times. And the fact that after he left that Forest went on a slide and never really got back to those heights is a testament to what a great manager he was. Last season was Forests first in the top flight since 1999. Even though they bounced back straight away after being relegated in his last season in 1993 and finished third in their first season back, they were relegated twice (1997 & 1999) in five years. It's quite probable that had he left earlier, say around 1985 that Forest would have come down a lot sooner, maybe before the end of the decade, similar to Derby after he left there.
To me he is genuinely one of the greats.