I refer to the following article: https://www.bloomberg.com/opinion/articles/2021-02-25/negative-interest-rates-could-be-trouble-unless-fed-acts, notably the following paragraph:
Market observers worry that this wall of liquidity could push short-term interest rates into negative territory. Although no one can be sure of the ramifications, this could prove disruptive to money-market mutual funds and to the functioning of short-term lending markets more generally. The surge in reserves will also add to banks’ assets, potentially causing them to bump up against regulatory leverage requirements, which limit the ratio of their total assets to equity capital. This, in turn, could cause some banks to pull back from lending against securities, potentially triggering yet another disruption in the “repo” market, a crucial source of financing for hedge funds, investment banks and many other institutions. Banks also might take steps to encourage households and businesses to take their deposits elsewhere.
How does negative short term interest rates disrupt the repo market in any way?