Nonsense is something you must factor in these days. I wouldn't take Lemar over Mahrez either, but if a hot prospect like Lemar is what elite club seem to be wanting these days what can we do? Expectations are high as well, so it's bias coming from expert around the league who think that you can't do any better after you've peaked already.
In addition, when you take into account that former Roma players who have proved less than him are all playing for tob clubs now, you suddenly realize that moving to our club (with the aim of attracting a better club in the near future) is actually a smart move because we're not even reluctant sellers.
Obviously, I wouldn't be making this argument if Salah, Rudiger, Marcos, Benatia, Pjanic, Lamela weren't playing for Liverpool/Chelsea/Psg/Juve/Spurs already.