I didn't think anyone was using the Tron ecosystem other than USDT token. The upside is that it rarely gets congested, the downside is that average transfer fees above $2 are very bad.
I agree, I'm also unfamiliar with those projects on Trx despite its past popularity during the 2017 ICO. Currently, I believe Trx is known for its TRC20 USDT, which is quite popular among CEX users due to its low transfer fees of just 1 USD.
I don't recall if I've ever used Trx, nor have I noticed any increase in Trx transaction fees during the crypto winter. I don't think new partnerships can drive growth for the Trx ecosystem, even though the TRX token reached an ATH a few weeks ago.