Don't know the guy. But I have no problem with semi-circular church buildings, or churches which attempt to bring people closer to the altar.
You need a bit of remedial time studying the nature and purpose of art (of which architecture is a subset.)
Sorry. I've developed an appreciation for opera, but that's about it, because I like music. If churches are not functional, they're useless, AFAIC.
Dysfunctional is the description we can give to certain Dioceses.
As to Architecture, it is expected that the designer will take into accord the use of the building, and in the case of RC church buildings, the focus of the congregation is certainly not the celebrant--it is God.
All Art, properly understood, represents the True, Good, Beautiful, and Holy (all of which are, of course, a unity) and its application should reflect this.
"Ars pro gratia artis" is a modern heresy; the fact is, if "ars" is not "pro Deo" then it is not Art.