Does the beauty of Buddhism lie in letting seekers seek beyond the bounds of religion? When I was young I was told by a booklet that if I found a better religion, I can follow that one. I liked the idea of God centered, open-sourced religion back then so it was what kept me loyal and the reason I found out that there was more to know beyond it. Where else can a seeker go but yonder past a certain point?
When I was young I was told by a booklet that if I found a better religion, I can follow that one.
Yes! allowed as per human rights.
As per buddhist scriptures, " Respect other philosophies, compare them with my(buddha's) teachings and follow me only when you find my teachings to be better ". 

I liked the idea of God centered, open-sourced religion back then so it was what kept me loyal
Good, because sometimes(most of times, to be precise) philosophers dwelling in thoughts about anatta start breaking 5 percepts at mental level and become dishonest to closed-ones at body-speech level. 

•••and the reason I found out that there was more to know beyond it.
Good, because your behaviour seemed to satisfy you and others in doing so. It doesn't mean that there is anything more to know beyond anatta. 

Where else can a seeker go but yonder past a certain point?
Theoritically, as per buddhist scriptures-- when seeker stops even seeing/feeling/realizing h-im/er-self as 'seeker', when a state is reached where, "causes&amp;conditions are interacting with causes&amp;conditions", then
What seems to be yonder stops seeming because there is/was nothing to yonder to from the start. 

Does the beauty of Buddhism lie in letting seekers seek beyond the bounds of religion?
Finally, yes if religion is binding you with 'Ignorance' of some atta. 

May you be free from your confusion.
Metta.