You rip the time space continuum😀
It all depends on the PI and how the lab is structured. The lab I'm currently in didn't have a postdoc for a couple of years, just techs and a grad student. I know of a PI who doesn't have any techs or postdocs, just grad students. And several successful labs I know have only techs. As long as the people in the lab are knowledgeable and can think critically, it doesn't really matter what their titles are. You just want to avoid the situation where the only person who knows the science and can design experiments is the PI, they need to be focused on getting more money. As long as the number of personnel isn't decreasing, it's a non-issue.
Having a postdoc or grad student in the lab can be important for tenure track PIs though, since a lot of institutions consider being a good capable mentor an important aspect.
PS. All PIs say they don't have money. One of my old PIs had multiple R01s and DOD grants (he was one of the highest funded at our institution), yet he was always complaining about how much more money we needed. It's just the nature of the job, grant funding can be unpredictable so you try to save as much as possible.