Hi,
One reason for a LIR to have multiple /29 is when a lir (ISP in this case) buys smaller operators and consolidates them. Since all of these blocks had some use before consolidation and its tedious to renumber....
I don’t see this as stockpiling, they will be even more in use in the future anyway, and we need to have enough use before being able to obtain more space...
If this is indeed the reason I see no problem with it. That's just operational reality. If there is some misunderstanding causing LIRs to accumulate many IPv6 allocations then we can look at better education. And if there is some malign reason for it, then we can look at changing the policy. I think we need to understand the symptoms better to be able work on the cure :) Sander