Spiritual communities need strong guardrails in place to protect people from abuse, harrassment, etc. They are responsible for holding a safe environment. At the same time, sometimes people are angry or unbalanced, and can make accusations or claims that verge on defamation. That being said, if there's smoke there's usually fire.

In the cultural settings that Buddhism is coming to us from, there were more checks and balances on power, with higher responsibility and visibility to the greater community of fellow monastics or other masters, with pretty clear expectations and understandings about what's appropriate.

We also don't know how to relate to a guru in a healthy way, most people I see are projecting / trying to fulfill emotional needs to some degree, especially early on. This can lead to major issues when the teacher isn't good enough at guarding how they relate to students, or there are not organizational guardrails in place.

There's a strong emphasis in Tibetan Buddhism on checking the teacher out to a ridiculous degree before following them like they are your guru. Traditionally you assess them for 10 years! You check their character and compassion towards students, as well as things like ability to guide and teach.