I don't really disagree, but in a way couching it like that is a little like asking if you "still beat your dog". It presupposes the wrong thing....that going slow is "bad" or "for beginners".
I think this connotation or whatever is what makes this one of the hotter topics.
What about thinking of the whole situation differently like suggested in post #49?
Seems to me there are potentially lots of good reasons to select going slow no matter the experience level.
I think perhaps a bigger issue is that "slow" is subjective and applicable to many different areas. Are we talking about initial cycle before adding any live stock? What is slow in that context? If one is doing a fishless cycle by definition of that process it's complete when all the ammonia you dose that day is reduced to 0 along with nitrite. Is that process by default "slow"? Does it matter if you try and speed it up with bacteria if you can still dose ammonia and have it eliminated (and nitrite) overnight? Once this happens would it be slow to only add one fish and not several? In this context wouldn't going slow be potentially detrimental as the cultivated bacteria wouldn't have enough food to eat with one small fish and die off and then when adding more there could be potential ammonia issues? Plus buying fish one at a time means each goes into QT which hopefully a person sticks with but as we all know they might let one slip past.
Not only with the initial cycle, but adding coral can become confusing on what one interprets slow as. Does slow mean add softies 1st then LPS then SPS? A year for each type or what? Or try one coral variety (aka birdsnest) at a time and for how long? 1 week? 1 month? Try one acro frag for a couple months before trying another acro frag and so on?
My only point with the post is to show how open fast and slow are subjective and as you gain experience you begin to get a feel of how those terms may be applicable to your individual systems rather than just try and take advise from strangers on the internet whom may not have any more experience and yourself just parrot the information and in fact may have very unhealthy systems. I am of course NOT talking about you! Just about the difficulty of sifting information on the internet in general.