Here’s a guess in an attempt to answer your question: There are differences between denominations that are “tolerable” and others that are “not tolerable”. If a group believes in the Triune God, the Incarnation (that Jesus was God in the flesh), and the Bible as the only authoritative Word from God, then they are “tolerable) as to their practices like Pentecostalism, Baptism, etc., etc., even though the host group doesn’t agree with those practices.
But if they don’t hold to the above fundamentals, then they are “not tolerable”. That rules out certain cults and other heretical groups. That is why the church may rent out to Pentecostals, but not to LDS groups, Catholics, etc.
I was thinking something along those lines, as well.
Just was surprised at the breadth of the bandwidth of "tolerable" in this instance.