This has already been explained to you before. DM'sGuild material is not legal in AL nor is it allowed at lot's of tables. Not to mention the fact that loads of it is broken, not play tested, and not official. Fan made material has been around for a long time, but now just because Wizards creates a site for it that it's suddenly become well accepted. Nothing has really changed in this department. Fan made material is still looked at cautiously and not accepted by loads of DM's.
This (unfortunately)
Not necessarily agreeing with the OP (or at all for that matter) but DM'sGuild material is flat out not allowed at any of the tables I play at. "Find new tables!" No, those people are good friends. Even when it's me running things I would approach homebrew with extreme trepidation and probably (if I'm being honest with myself) dismiss it out of hand. Why? I'm not quite sure. WotC has put out some extremely flawed, unfun archetypes in the last month and yet it always *feels* more trustworthy than anything I find online.