People are putting their money into treasuries because they worry that the risk of putting their money into the bond market, the stock market or even the money markets is very high.
Normally, if someone goes bankrupt, you wipe out the debt and get a fresh start. But that’s not permitted with student loans. So the effect is to impoverish many graduates with very high debts.
When we say “people worry” about inflation, it’s mainly bondholders that worry. The labor force benefitted from the inflation of the ’50s, ’60s and ’70s.