First of all, the definition of religion states that there is a higher power, therefore if there is no defined higher power then it cannot be a religion. It is a belief at that point. Claiming that Taoism is a religion is like claiming that all religions and beliefs are exactly the same. I worship no God, therefore I have no relgion. And technically being "devout" as a Taoist is possible, by this I mean those who make a point to live Taoist daily and consiously. I do not try hard enough to find The Way, nor do I actively seek the balance in my life. Some would claim, due to these things, that I would not be a true Taoist. That would be like claiming that if one does not go to church, then they're not real Christians.
Either way, don't try to claim that Taoism is a religion, and don't accuse someone of bending The Way to suit themselves as that's not even possible.