There are lots of concerns about choosing a PhD program, the least of which is choosing to do a PhD. But I saw an advert, on twitter, to go work in an "exciting" lab. Yes, the lab is exciting, and in many ways, including the science.
But, I know the PI. Somewhere between "know of" and "talked with". And I don't have first hand info, there certainly have been concerns swirling around this person for a while. He (yes, its a he) is one of those that women warn other women about. "Nothing actionable" they say "but, be careful, and don't ..."
Which raises the point, do your due diligence. Talk to people. Ask the questions: how long does it take to get a degree in this lab, who gets to be first author, how many people leave this lab? Ask the people in the lab, and ask the people NOT in the lab, but in the program.