Many new privacy coins are crap, they offer new features that the teams aren't ready to back up, that veil coin promised a stealth function, sending coin from a stealth address to another but that feature doesn't work till date and team aren't saying anything about it, another one is mask coin, failed in the end
This is why some exchanges are delisting those privacy coins since they arent the types that centralized market will love to. In exxeption with the monero which is the most sophisticated and I believe the good one amongst the rest. Its up to you to interpret how this projects will roll. But I dont have much hate with them as their object is pretty simple and nurturing the true decentralized.