Github is empty of commits making the project short of grace. Investing in it would be a milestone round ur neck as would putting ur money in pretty much any other coin. Since the affliction of becoming a bagholder is real with these dodgy coins. Nothing has changed in crypto since 2015, not a single quantity of ruse, gaslighting, fraud and greenmailing has gone away.
What's the source for your unbacked assertion ?
Developing activity is rather in ATH. "Don't trust, verify".
https://stack.money/asset/nimiq-2