They could find it humorous considering it isn't real? Fat pets aren't usually well liked, or might make people think poorly of the owner but none of that applies in a video game. I do agree that it's kinda ugly though, not a huge fan of the fat beast trend of FFXIV pets or mounts. The only mount I never regretted buying is the Enchanted Fey Dragon (horrible video though) as that actually felt like work had been put into it, and not just a retexture with model changes here and there.
Having said that, it's best they stick to recolours or slight model changes as that takes less development time. Even if people would have you believe the FFXIV team has a dedicated set of staff that only work on cash shop items, and the money made from the cash shop is used to fund said staff which is incredibly unlikely.