Dunnsy the DAO pKLIMA allocation is quite massive (480m, so we're allocating less than 1% of the total). You're correct that it's a "strategic reserve" - but right now we have no other intended uses for it beyond bolstering liquidity, so we might as well put some small amount of it to work (or at least have the option to do so).
We're very hesitant to pull any KLIMA/Carbon liquidity, since carbon asset liquidity is our primary public good as a DAO. The BCT/USDC pool is a special case because it's redundant with the USDC=>KLIMA=>BCT route.