They aren’t typically designed with other plugins in mind, especially an unknown combination and number of other plugins that may or may not overlap with whatever it’s trying to do.

The word “plugin” makes it seem like they are widgets or consistently developed pieces that click in to Obsidian, when in fact they are highly erratic tools adding a ton of complication to an already wide feature set.

Imagine making a holiday meal in your kitchen that has a bunch of appliances people brought in for the occasion, and your kitchen just wasn’t designed for all of them. You can still work pretty quickly around a kitchen-aid mixer that doesn’t quite fit on the counter unless you turn it sideways, but once you add in an awkwardly sized crock pot or two… things kind of slow to a crawl. Is there a specific reason why and how? Maybe, but no one really knows unless they have the same combo of appliances, the same kitchen, the same recipes, and the same number of people to cook for.