Is Solana immutable?

Could you please clarify for me if Solana is immutable? I've heard conflicting opinions on this matter, and I'm trying to understand the underlying principles of this blockchain technology. I understand that Solana is a high-performance blockchain designed for scalability and speed, but does this mean it compromises on immutability? In the context of cryptocurrency and finance, immutability is crucial for maintaining trust and security. Therefore, it would be helpful if you could elaborate on Solana's immutability characteristics and how it compares to other blockchains in this regard. Thank you for your assistance in clearing up this confusion.