What is the weakness of Stellar?

Certainly! Can you elaborate on the potential weaknesses of Stellar, the decentralized blockchain platform? Are there any concerns regarding its scalability, transaction speed, or security measures? Additionally, how does Stellar's governance structure compare to other blockchains, and could this pose any challenges for the network's future growth and adoption? Lastly, what are some potential risks associated with investing in Stellar's native token, Lumens (XLM), and how might these factors impact the overall stability and success of the platform?