What is the controversy with Vega protein?

Could you elaborate on the current controversy surrounding Vega protein? There seems to be a mix of opinions both positive and negative in regards to its safety, efficacy, and potential impact on health. Some claim it's a revolutionary new source of protein, while others raise concerns about its long-term effects and potential side effects. What are the key arguments for and against Vega protein? How does it compare to other protein sources? And what are the latest scientific findings regarding its safety and nutritional value?