Several factors contribute to this
1. The high level of scam and pull-rug projects in Crypto means if you unveil then you are considered more as genuine than anonymous
2. The realization that fiat and crypto are more realistic than Fiat vs Crypto and could probably survive regulations more so financials like Fluid.ch that stand astride CeFi(regulated) and DeFi(Unregulated) are more trusted
3. Recent development in Crypto and the market such as LUNA Saga, a bearish market is making people look closer and find those behind the scene

This has caused more and more sponsors to react to the market request for identification to unveil themselves

So lets look at why stablecoins may or may not be secured.
1. They are not backed up by enough collateral or some complex collateral like algorithm - TerraUSD
2. There is not enough audit and transparency - most publish their own and not many independents

Since the fall of UST a lot of companies have started to move away from this place, moving closer to transparency and also more fiat backing as TetherUSD and BinanceUSD recently announced. My extensive research has also led me to some smaller providers like fluid.ch DigitalDollar(DUSD) with different approach to the subject essentially moving users cash from the fiat status to digital status transparently this may be the approach for the future of stablecoins. Where users mint their own coin directly from their fiat currency. It seems a safer and more secured approach.