No, Soylent is not exceeding the AHA's guidelines; the AHA's guidelines are to avoid "the bad fats, saturated and trans fats," limiting them to below specific levels. Soylent keeps below those levels. The AHA also gives general advice about overall fats, the context of which is to help people keep bad fats low - most people don't have the specific fat breakdown of the foods they eat, and it's not possible for them to have exact numbers. Shooting for a general range and types of food are ways to limit the bad fats.
Here is their page on on fats; it does not specify any upper limit on overall fats:
This is their real advice; note the line at the end (emphasis mine)
Again, their goal is not a particular level of "total fat." The goal is limiting the bad fat.
In other places, they offer other specific advice:
The also provide some general guidelines for fat levels within the context of normal mixed-food diets, including a recommended range for fat intake from foods, but this is always clearly based on the understanding that mixed foods will contain both good and bad fats. The only aspects of fat that they say to limit are specifically the bad fats .
Here are some specific guidelines they provide:
Again, no limit on fat intake to 35%, just a statement that 25 to 35 percent is a good target range for healthy eating of mixed foods. They proceed to tell you what things you should actually limit.
In my experience, registered dietitians are well versed on this and well aware of the differences between overall fat intake versus bad fats. What they may not be aware of, however, is the specific fat profile of Soylent, and how that plays into the picture.