The British Journal of Educational Technology
published a study on how gamification can help turn kids into readers in 2020. I am sure there are more, but this was the most cited article I saw on my quick drive-by of the research engines I still have access to.
I think the bottom line is that challenges, book counts, goals, and spreadsheets, no matter where they are accessed are sort of a "get out of it what you put into it" schema for many.
If you know that the carrot of that little number ticking up is going to decrease your quality of reading, then sure, don't use them. But some people prefer to lower a number and state the intention of more quality. I know some here have in our various reading lists and challenges.
Don't get me wrong, I like very little of what remains of Goodreads post Amazon takeover, but I'm not going to yuck someone's yum if it helps them read more.