I'll eagerly accept that any exercise that improves a students judgement in
pattern work is worthwhile and I agree that no spoiler patterns would do
that. The problem is that some have interpreted the "no-spoiler" exercise
as a landing to a stop without the use of any spoilers at all to simulate a
spoiler system failure. That's scary.

Bill Daniels

In many situations I could see it being scary, but in at least one
case I liked it.

I flew a Katana DA-20-C1, and the instructor simulated a
no-electrics landing. With no flaps, the thing floated all the
way down the runway, and we went around (but we could have landed,
long runway).

His point was to show that if the flaps (like spoilers) fail,
find a looong runway. If the runway is long enough, no problem...