Sure, you can borrow more, but that doesn't seem to be what's happening, at least not contrary to long-term trends. Credit card debt is going up[0], but at a rate that looks exactly like (or perhaps slightly lower than) what it would be if you just extrapolated from 2019 and ignored the pandemic (and recent data in the last year shows that growth in that number may be slowing a little). Debt servicing as a percent of disposable income looks pretty good too[1]; much lower than the absurdity that was the 00s, and on par with or better than pre-pandemic 10s. You have to go back to the early 90s to get much better than that, but if you keep going back, it gets much worse.

Certainly these are just two metrics among many that people could look at, but if we're talking about consumer spending being strong, it does not appear to be because people are borrowing more today than long-established trends would expect. (I do think it's concerning that consumer debt has more or less only gone up over time, but that's a separate discussion.)

[0] https://fred.stlouisfed.org/series/CCLACBW027SBOG

[1] https://fred.stlouisfed.org/series/CDSP