That would be dumb! The project wouldn't be adopted if it were only accepting TRST tokens as donations.
There should be possible to donate any popular coin but everything to be converted in TRST.
Take a look at Particl decentrilised market, it only accepts PART and you pay listing fees in PART but you can use any coin, itll be exchanged automatically to PART:
https://youtu.be/PRxmGh24ILUThat means
vital for the system.
I agree, they should buy-back TRST from the market with the ETH and other assets so the price will at least be kept at a certain point, if not made to go up.