I think the proliferation of these new stablecoins despite their centralized nature is positive as it is taking market share away from Tether which currently holds a Top 10 spot in general market cap. So transparency would improve in the market which is net positive. The long term benefit of using these is that it will increase adoption as merchants and organizations see the efficiencies in using them for transfers and payments which result in cheaper and faster settlements as long as scaling improves on some of the blockchains.