I've read stuff like that Azmat and I must say that it is absolute nonsense. I'd like to see the premises specifically behind why different people say that because that would make it easier to argue their particular assertion. Otherwise you end up with a dissertation on maximal strength versus speed or power. We've actually discussed some aspects of this I think around here somewhere, but I'll start my own version of those statements :)
- If one cranks out a RM without struggle (subjective, and nonspecific?) then one is not doing a RM
- If someone spends time grinding out the RM's then…that's all we know until we know more
Even without getting into technicalities there is so much left on the table with those statements and they are built on some very faulty assumptions.
For instance, you might have someone who routinely cranks out RM's without a lot of struggle, you throw a few pounds more pounds on, and they fail. To make the leap from there to "they would benefit from speed work" is asinine.
I have actually found, for instance, that many people "fail" in those circumstances because they have never actually had enough experience with "grinding" up a real maximal weight. They are in essence, afraid of it and they lose composure.
Matter of fact, see a video where some guy is grinding out a maximal deadlift. You get all the form police come out nitpicking his form. So we say, look, that was a true maximal lift, it's never going to look perfect. So the form police, they say, you should never lift without "perfect" form. Right there, you have the guys that are "cranking out RM's without struggle"! It's built into their philosophy that they would NEVER struggle. And this is a lot of the trainees and a lot of the strength coaches have it built right into their training culture. Because a lot of coaches do not want their trainees to miss many lifts for whatever reason.
You could say, basically, that if you've never truly been exposed to a maximal lift then you create this environment where you always leave a little bit in the tank. Or, in other words, what looks like a duck, walks like a duck, and quacks like a duck is probably a duck. Occam's Razor at work.