I do not see how you correlate a failure of a wood spar glider with the potential grounding of metal spar SGS-2-33s. That is a reach.

Wood spars fail from drying out, wood rot, or failure of an inspection to find cracks. Let's look at all of the wood spar Decathlon issues, yet with inspections, they are still flying. Not worth much, but still flying.

How does that correlate to a metal spar glider? Yes we all know of the L-13 issues.

If you maintain your aircraft, metal or wood spar, make the decision yourself, or the mechanic will decide for you, when it's time to retire an aircraft.
Not the Feds.

I'll agree that nice, new(er) all metal training gliders would be nice for a lot of clubs. But not $100K + Euro Plastic.

T