There's no real point in degassing before wet-laying, it's virtually impossible to not introduce air in this process. The bubbles in the resin are the least of the problem.
When we vacuum bag, there is just inevitably air that gets trapped between the layers and in the resin as it is applied. Then when a vacuum is pulled, the air in the resin expands, making the voids bigger. The same thing happens when you degass, the air expands under vacuum and it's larger surface area forces it to evacuate from the resin. Unfortunately when vacuum bagging it gets trapped inside the laminate, as it can't get out through the resin and layers of reinforcement.
In the infusion process, the air is completely removed from the entire laminate stack prior to introducing any resin, which is why degassing can be useful because then the whole process is completely free of any air at all. If one doesn't degass, then the only air in the process is what is introduced from the pot. In my opinion it is mostly unnecessary, it just complicates a process that can already have other complications. It certainly isn't necessary at all to degass to get a perfect surface finish on a cosmetic part, though if one were making structural parts for NASA or Boeing then I would see the benefits.