...seeing your comments seems that depends on what the rider or user is looking. Seems too that most only use the bikes at barely mid range speed or into town and for few kms, hence the perception that the single carbs are better.
I always admitted that the later Triumphs are the best in functionality for the street use. Not the best looking though. The factory was down but they tried to squeeze all of the design, so disregard all that is somewhat dumb.

Then you have the opinions Tony and Kevin here, that are tuning these bikes since long time and race them, then my opinion that is from a daily rider, strong mid range rpm user and "long" distances user. Then you have the opinion of HT that is wrenching the older stuff and some of these and then you have almost all the factories that made all the big engines with multiple carburetors...