For those not in the loop: it's been impossible to make transactions on a number of platforms including Robinhood due to the overwhelmingly high load causing those platforms to fail. A lot of people were basically locked out from trading.
I think the government are damned whatever they do. A massive fiscal stimulus admits there's a massive problem (and the government has been trying to project a quiet confidence that this is something under control), so markets will tank. A small response could be seen as inadequate.
It's easy to have no fees if your customers can't make transactions.
To be less snarky, I'd avoid them if you're trying to time the markets.