using less spoiler just before the flare???

Greetings,

This may get many comments, but I'm curious as to the consensus.

On a recent training flight (wasn't me...) the student was advised to go
to about 2/3 spoiler just before the flare.

Normal approach, field was made, on target for a nice touchdown.

When I was getting instruction, I was always encouraged to progress
toward full spoiler in the pattern and to ideally get to a full spoiler
and stabilized approach once the target touchdown point was "in range".
Advice given was that full spoilers minimized the potential for
ballooning and provided maximum drag and minimized lift. i.e. get on
the ground and stay there and make a positive effect to get the glider
stopped. Additionally, I've always been of the mind set that unless
there was an unusual circumstance, that spoiler changes near the ground
were usually best avoided.

Any other thinking as to a benefit in reducing spoiler just before the
flare?

Just pondering...

Gary