Burning SBD is too slow at the available funding rates, even if this proposal was fully funded, only 25K SBD would be burned which won’t make a dent.

By cycling the funds through conversion and market buy action, the same funds can used to reduce SBD through conversion every 3.5 days and have a proper impact on SBD supply reduction.

Remember the STEEM marcap is roughly 7 times larger than the SBD marcap so the impact on Steem should theoretically be 7 times less.

This is all done incrementally so the Steem market should be able to absorb it and it can be throttled/stopped at any time should it affect the Steem price too much.