I think they’ve understood and are claiming that a simple loop is cleaner than what you wrote. I’m not sure how since that 1 line communicates what’s happening

I think they’ve understood and are claiming that a simple loop is cleaner than what you wrote. I’m not sure how since that 1 line communicates what’s happening at a high level with 1 word “sum” whereas a loop requires me to read the loop to confirm it’s a plain summation. This sounds like someone complaining that the concepts they learned when they were first starting out are the only concepts that programming languages should introduce which is silly - technology evolves as we find better and new ways of accomplishing old tasks.