This is a theory that I have known and taken into account since 2005. However, I don't know of any cases that confirm this theory. But these cases should exist because in the past it was often dived like this.The evidence comes from bubblestudies. We KNOW there are micro/notsomicrobubbles in the blood when scuba. They may not be big enough to cause serious DCS with "Normal diving behaviour", the issue specifically with freediving after scuba is the shrinking of bubbles that then pass into the arteries and get carried into the especially sensitive areas of the body. The brain and the coronary vessels. Clogged arteries lead to ischemia. Ischemia in Brain and heart is a very different beast to battle than skin/fatbubbles.
Let's take the depth limit in freediving as an example.
In the first book on diving medicine, the maximum depth was calculated from the maximum lung capacity and the minimum volume. Was that wrong? No, because even today some freedivers injure their lungs when they exceed this limit.
On the other hand, other freedivers dive much deeper, so the simple theory is incomplete. There is no consideration for the bloodshift different at freedivers.
Please don't get me wrong. I'm not saying here that freediving after scuba is safe. But experience shows that an absolute NO medically is not present under all conditions.
I think that when asked whether such conditions exist, not all diving knowledge is questioned.