Pix is really good but I don't think it beats Solana or Ethereum L2s.
Most recent indicator of peak Pix transaction volumes I could find [1] was 227M/day (=2700 TPS). You can see yourself that Solana does 130-140M/day consistently. Pix fees you quote are still triple Solana's.
Not to mention there is the entire decentralization aspect, which means the government does not control your money as with other blockchains.
[1] https://agenciabrasil.ebc.com.br/en/economia/noticia/2024-09...
[2] https://blockworks.com/analytics/solana/solana-onchain-activ...