I feel like that might be an organizational problem. At my company the designers will present their figma designs to engineering and we'll have a meeting to go through them and bring up concerns with exactly those sorts of issues e.g. "This list may actually have hundreds of entries in practice, are bullet points still right?". Then we iterate.
Took me years to finally push this culture. The designers no longer try to get away with designs that are too difficult (read: pricey) to achieve, and developers have to keep their skills sharp resulting in less blame and a more competent skillset. Then the designers and developers who thought it was part of the culture to never work together nicely were immediately noticed and shown the door.
In my experience, it is a serious problem when product people do not understand how their product actually works, even when treated as a black box with observable external behaviors and interfaces.
They knew how the product worked (they used the product) they just did not interact with devs - so they didn't really get the implementation. Their only opinions there were formed from leadership who was very biased with what they wanted to express.
