Depending on the airport, yes. Some airports you can expect circling before landing and ridiculous taxing times, others are next to nothing. Still, you can easily spend 30 mins getting from T4 to T5 at LHR. Done in UAE style it would not be taking over 30 mins to get from DWC to DXB and would likely be a moving lounge.
If they want to stick people on a London Underground type train and have a loop that connects one terminal to the other but not to third (i.e. you can’t go directly from T4 to T5, you have to go to T123 first at LHR) that’s a different story, but Dubai and the UAE doesn’t really have any past record of creating such shoddy infrastructure does it now.