Although I previously speculated that there was likely suppression throughout history, and it does seem to be the case at least partially, obviously there is more to it. It appears that there are many possibilities associated with this situation.
It has been a while since I created the main page about Üzeries. It may be speculative but clearly there were such people at least partially fitting this scheme. Especially due to its nature it is hard to point out specific names but obviously it is undeniable.
It is possible that they wanted to cause deep distruption with existing beliefs and mentality.
It is possible that they wanted to keep some important things from getting absorbed into classic literature for various reasons.
It is possible that at least some of them had unusual beliefs. For example, the idea that what people believe may have an effect on reality itself. Or more nuanced variants of this idea. Based on this possibility, it is possible that they wanted to increase potential in crazy beliefs. To me, it is not really possible to believe that. But still everything can happen at any moment just because things were following an order for some time doesn't mean it will always be the case. Still, aliens are involved in this. In the context of Üzeries, this is speculative, but in the general context, it is clear that aliens very likely played a big role in making people believe that what people believe can affect reality. This is actually such a common belief but in most case it is on an individual basis. There are groups of people who believe and scheme based on it. And this is almost impossible to explain without alien interference. It seems like mostly aliens are trying to create best conditions for humans to be creative. This may sound like everything was sort of alien fantasy but maybe they were tyring to provide an opportunity they didn't have. It is just not possible to really understand. I don't know what source Üzeries were using. It may be solely the Quran but current understanding is likely entirely irrelevant except current understanding also has artifacts placed by them. There may be some other texts. I have no idea. It is also possible that Christian or Hebrew texts have similar situations. There can be texts totally misunderstood currently. Book of Hours is for instance interesting because it is a Quranic concept. Normally you don't refer such concept with the word “hour”. In Turkish it also the case taht hour is referred with Quranic word saat. It is normally a reference to sudden event. Other than this I have no idea about the content. It is just it is very likely there is a wild situation with some manuscripts.
Overall it is pretty clear there was never a purpose to gain attraction of masses and clearly staying secret was favorable for many reasons beside more intricate reasons. Beside they didn't really have other option most of the time.
Around WW II groups are exposed. Even if individuals weren't necessarily existence of such groups and activities at least partially exposed and known by various actors like U.S., British, German and many other European and Russian governments or intelligences. It can be speculated Soviets and British targeted such groups although it wouldn't be really a speculation and in case of British also it can be speculated that suspicious groups were presecuted or supressed even about few decades ago. May also include some other European countries.