> only it was "Photoshop files hold the (design) truth" before
You mean Fireworks. Photoshop was for graphic design. Web designers used Adobe Fireworks. Figma is a successor to Fireworks, not Photoshop.
I was in web agencies since like 2002-2015, always got PSDs from either clients or internal designers
Sure, and also Illustrator sometimes, and Photoshop at other times. Some of the designers I know (very famous for their ui/web work) never touched vector components and just had a ton of layers in Photoshop and air/paintbrushed everything. Hence the meme...
Many designers stuck with Photoshop sadly. Back when I did agency work it was absolutely normal to get PSDs of mockups.
Nah yeah Photoshop .PSD's were totally normal for website designs. I got extremely proficient at building functioning websites based on PSD files, going back as far as the days of using nested <table> structures with 1x1 transparent spacer.gif images :) I built hundreds of websites from .PSD files, and Fireworks was pretty much non-existent in my experience.