It's been quite a long time since the first cryptocurrency with the "Mimblewimble" privacy technique was released. My first days of using GRIN were quite troublesome due to its added complexity. But it's a great coin to use for privacy-oriented transactions once you get the hang of it. Somehow, GRIN became a forgotten cryptocurrency as all of the attention shifted back to Monero. Was this a result of poor marketing/promotion efforts? Or a lack of user experience?

I'm wondering if this coin still has a future, especially when privacy on crypto has been frowned upon by mainstream governments. Do you think it can be good long-term investment like Monero? Or is it a complete bust? Your input would be greatly appreciated. Thank you very much.