I think even the dev team would admit that the timeline hasn't been quick but as said before - it's a new blockchain written from scratch in C#, not a fork or a copy/paste as 99.9% of other altcoins are and which offer nothing new.

Slow progress isn't indicative of a scam, the complete opposite is more likely to be true - scam coins are copy/paste ones which takes about an hour and any development team which has been dedicated enough to work on a project for a year and shown their competence by having a working and stable chain at the end of that is the most exciting new development since BTC and ETH wrote their code.

Nothing has been lost by waiting out the bear market and making sure the code is working well - I'd take that a sign of a mature and patient team behind the project.