Because Bitcoin and Ethereum are more heavily focused towards decentralization first(while having more TPS on layer-2s), while Solana is mainly geared towards better user experience first(hence high TPs on base-chain), then decentralization second.
In the end, which protocols are 'better' will just depend on what you want to prioritize: decentralization or cheap fees/fast txs.
I myself have seen where the dev team and Solana leaders turns down topics on anything being implemented that would make Solana itself less decentralized, so to me based on first hand sight I could not agree with you at all. This is definitely a huge feat being accomplished by Solana.