It's a presidential election year; time for every single Republican to suddenly start talking about a "debt crisis" that for some reason didn't exist while they were running up record deficits to cut taxes for the wealthy.
It doesn't change the fact that the US has an unsustainable growth in the national debt which continues every year. Broken clock right twice a day etc. The US spending more than it makes on a consistent basis is not good long-term. It's a bipartisan issue, both parties regularly approve budgets well above what we can afford.
Jerome Powell is the fed chair, he was nominated to the post by President Barack Obama in 2012, he was subsequently elevated to chairman by President Donald Trump (succeeding Janet Yellen), and renominated to the position by President Joe Biden.
He could certainly make a suggestion. Congress is the one that has us on an unsustainable path and he has no problem pointing that out; so why not a solution?
You're right. We can spend more than we make forever. There will be no consequences to such a fiscal plan. Don't listen to Jerome Powell, he doesn't know what he's talking about.