Hopping too many startups in a row?

The last 3 positions I've held have been SWE at relatively small startups. Within 2 years of being at those companies, big changes occurred prompting me to hop for job security (didn't secure next round of funding, C-suite got replaced, etc). For me, this is the nature of startups- fast turnaround and turnover. I thought this was normal until my last interview where a recruiter was looking for stronger explanations as to why I haven't held a position for 3-4 years recently. Being clear that it wasn't a positive sign to them. Is it really that strange, or were they maybe used to bigger company culture and expectations? Not going to risk my own security riding a sinking ship.