Examples: Publicly traded companies Uber and Lyft.
Sorry, they're not startups.
And yes, most will have less than 6 months in the bank. Most rounds of funding are planned to last 18-24 months. If they raised at the tail end of 2019, they're already 4+ months into that.
More likely, the bulk of the 65% are companies who raised late 2018 through mid 2019. They're in the middle of figuring out their new round and who will/won't be involved. The good news is that the VC funds have to put their money somewhere so investment can't stop. LPs don't invest for good luck. The bad news is that VCs are likely going to slow down for a quarter or two and valuations will grow more slowly than before.
Companies that have good metrics may be in good shape as VCs become more available and their pipeline dries up. Companies with mediocre to bad metrics may be gone by the end of the year.