That is a complete load of garbage.
(1) If someone is in the state of grace necessary to receive Communion in the first place, they are as holy as any priest according to Catholic doctrine.
(2) As it stands right now by Church law, as long as she is a Catholic of good reputation she is qualified to serve as a Eucharistic minister and to therefore touch the host hundreds of times during the course of a Mass.
(3) As it stands right now by Church law, any layman may receive communion in their hands - thereby touching the host.
(4) In parishes where the standard practice is to receive communion on the tongue without using one's hands, the altar server holds a plate under the communicant's chin to catch the host if it is dropped.
The only conclusion I can come to is that you are either maliciously telling lies or you are shooting off at the mouth concerning matters about which you are completely uninformed.
I saw the video.
My parents are nearing 80 but are very spry. They are both extraordinary ministers (Eucharist ministers). I would hate for them to have to start touching people's tongues to give them communion and get sick from other's germs. They are fairly healthy, but are more susceptible to illness.