These quotes are simply quotes for ignorant Catholics, and sadly there are tons of them out there these days who don’t know the very basics of their faith.
You kneel during the consecration and should be kneeling the entire time once it occurs until the Eucharists have been placed away. During that time you are in the presence of Jesus himself according to Catholic doctrine and do not be kneeling unless physically unable to do so is disrespectful.
Its really nothing more difficult than that.
Spot on!