No.
I am not a “long range hunter”, I am a whitetail hunter who is used to walked-up (tracking and still hunting) shots involving short, fast situations often at a moving animal, or a brief look as it stops to look back and see what spooked it. Virtually everyone I know uses a mpbr zero, and I did as well for several decades. I never saw a hunting rifle wearing a scope with an exposed turret, or a reticle with holds, for the first 30 years of my hunting. As I have hunted more in the west where the opportunity to take longer shots is more of a reality, and as I have been shooting casual prs matches over the past few years, I have used both dialing and holdovers where appropriate for longer range shots. I now use a 100 yard zero hunting, I will typically use a reticle holdover between about 150 yds and 250 yards (very simple and memorized), and dial for anything longer or where I have more time. I dont have a lot of longer range shots at game under my belt, about a dozen animals taken either by me or a partner I was spotting for that were at a range past where the 100-yard zero was still on vitals. None were long—Im talking about shots within or almost within a mpbr zero—but thats also the range where time is more likely to be a factor. Of that dozen, the shortest was a ranged 167 yards, the longest about 380, with most around 200-220. Of those I have been involved in there were NO shots where we didnt have plenty of time to spare, including for dialing. I can think of 1, maybe two situations where we did not get a shot where it’s POSSIBLE—not likely, but possible—that we could have gotten a shot off had we not taken time to dial. All of the other missed opportunities were fast enough that I dont think I could have gotten an ethical shot off regardless of what I was using, short of maybe a shotgun with buckshot (which would have been hopelessly out of range, but you get the idea).
My mpbr only gets me to 275 yards or so, and due to the built-in error combined with my own error from a fast field position I dont feel its the fastest or best way for me to take those mid-range shots. I have not clocked it, but after practicing both dialing and holdovers for several years, and using all holdovers for my hunting practice this past year, I think the time difference between dialing versus a reticle hold is negligible for me once Im past about 300 yards and need to be between hashmarks, counting hashmarks, etc.
So no, based on my experience I do not think dialing takes too long for the situations where I would use it.
Also, all of the above are on deer sized game, not elk.
Now, squirrels are a different story. Those suckers are definitely too jumpy for dialing.