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... well... unless it was some issue with the rocket's delivery that impacted the lander, like damaging a portion of it on release, or shocks on takeoff?

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They should have the measurements to know if the rocket had any forces that went out of spec during launch

essentially, Apollo 13

Apollo 13's emergency was caused by the spacecraft's service module, not Saturn V:

https://en.wikipedia.org/wiki/Apollo_13#Investigation_and_re...

Apollo 13 (and previous flights) did experience "pogo oscillation" from the Saturn vehicle which caused one of the first stage engines to shut down early.

https://en.m.wikipedia.org/wiki/Pogo_oscillation

The damage to the Apollo 13 service module that caused oxygen tank 2 to rupture almost certainly happened well before launch during ground testing.

See https://nssdc.gsfc.nasa.gov/planetary/lunar/ap13acc.html

So? It was irrelevant to the issue. The issue was traced back to manufacturing.

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