Let's not compare the advanced options of Excel or how Excel bugs annoy me. There are loads of them.

Let's just compare what people do when they need a tool like Excel. That's when the 90 or maybe more % of people will do. That is what I do. Everything I do in Excel can be done on LibreCalc.

So it is true that LibreCalc can replace 90% or more, because not everybody needs those advanced topics.

Same for the other LibreOffice apps, Writer is good for almost everybody. As LibreDraw and others.