Worth noting that this has been available since 2017 and not many people cared then either:

https://bitcoinmagazine.com/articles/scandinavia-leads-europe-latest-bitcoin-exchange-traded-note-launch/

Then again, ETFs require the fund to actually hold the asset it tracks while ETNs don't, so the difference in hype may lie there. ETNs don't actually help the market while ETFs can.