Why Tron (trx) is still relevant?

I don't understand why Trx is so widely used for stablecoin transactions. It's super expensive compared to all L1, even when you rent energy! Ethereum has stablecoin transactions fees under 1$, but exchanges keep it at 4-8$, so this can turn off many users from using Ethereum. But what about Aptos, Solana,polygon and other chains? 99% of the time when I am asking for a usdt address I get Trc20. And onchain fees are around 6-8$, when using energy it can be brought down to 1$, but it's really not user-friendly to always rent energy for 1 transaction. Is it an adoption problem or I am missing something?