I find it worthwhile to try other things. It can help keep the mind open and it is a form of exploration. It is best to sample some things after one has a sense of how to remain safe in the doing. When that is not already present the exploration can be the learning through injury and that isn’t particularly fun - though it can be some of the more impactful and long-lasting lessons we absorb.
Toxins are purged by the body on its own. Yoga is not required for the body to function as it is designed. However there is some added benefit to periodic, controlled sweat for some people (sweat lodge, sauna, et al). It is not something I personally feel is required on a daily or weekly basis. It’s best to examine toxins from the other end of the continuum. Stop putting them in in large doses and there will not be such a calling for getting them out
There is always benefit. The question is whether the benefits are delivered safely or “do they outweigh the risks”. That is for each person to answer for themselves. I will say there is a tremendous dedication on the part students doing this practice and commitment is absolutely part of the path. We could all learn from such dedication and discipline - as long as it doesn’t move into addiction.